Note: I get commissions for purchases made through links in this post.
Trio building sets include several interesting and fun sets that I file under the Medieval theme. There are a handful that are quite popular and another handful that are rather hard to find.
Below, you’ll get a closer look at those popular sets and will at least get to see what pieces are included in the rest of the Medieval Trio sets.
Make the King’s Gatehouse the Entry Point to Your Medieval World

The King’s Gatehouse gives you a “wooden” gate that opens downward as if there were a moat outside. Two knights guard the entrance with their swords and shields.
They also have several other weapons at their disposal.
There is a cannon that actually shoots a mace quite a distance. You get a catapult for flinging a boulder far and wide. And you can dump a flaming, possibly molten…something from the top of the wall onto any enemies that make it past your other defenses.
A complete King’s Gatehouse set (P6839) includes the pieces in the list below.
- 5 Black size 1 bricks
- 12 Gray size 1 bricks
- 6 White size 1 bricks
- 3 Black size 1 angle bricks
- 1 Boulder
- 1 Brown catapult holder
- 1 Orange catapult bucket
- 1 Cannon
- 1 Flame bucket
- 1 Gray size 3 bricks
- 4 White size 3 bricks
- 1 Gray size 4 arch
- 8 Blue size 5 sticks
- 12 blue size 3 sticks
- 1 Catapult stick
- 1 Small gray solid panel
- 2 Gray solid panels with shields
- 2 Gray solid panels with windows
- 1 Gray square window frame
- 1 Square window panel
- 1 Cannon chassis with wheels
- 1 Brown arched door
- 1 Yellow flag
- 2 Blue and white shields
- 2 Swords
- 1 Mace projectile
- 1 Flame
- 1 Bearded knight
- 1 Mustachioed knight
- 1 Instruction booklet
Strange Things Can Happen in the Trio Wizard’s Castle

You never know what you might find in a dark wizard’s castle, especially one where a dragon is prowling about.
Inside there are false floors you might fall through and moving walls that will lead you to…who knows where.
The orange crystalline formations atop the castle walls could be fire or magical stone or…who knows what.
The ball of flame could kill you if it falls on you or it might just turn you into a…I don’t want to know.
Here is the complete list of pieces in the Wizard’s Castle set (P6840).
- 7 Black size 1 angle bricks
- 32 Black size 1 bricks
- 8 Black size 2 bricks
- 7 Black size 3 bricks
- 1 Black size 4 brick
- 1 Gray bucket in red holder
- 1 Black size 4 arched brick
- 2 Black tower floors
- 1 Orange size 2 brick
- 1 Orange dragon head
- 1 Orange left leg for dragon
- 1 Orange right leg for dragon
- 2 Orange and red dragon wings
- 1 Orange dragon tail
- 5 Orange crystals
- 2 Red size 2 straight sticks
- 1 Red size 3 straight stick
- 21 Red size 5 straight sticks
- 2 Red size 7 straight sticks
- 26 Red size 4 curved sticks
- 1 Black castle floor panel
- 1 Orange dragon head for door
- 1 Brown door
- 3 Picture panels
- 4 Gray curved walls
- 5 Gray curved walls with windows
- 1 Gray frame with large curved base
- 2 Gray barred walls (curved)
- 2 Gray frames with small curved base
- 1 Gray tower section with arch
- 1 Yellow and orange flaming molten metal ball
- 2 Brown flags
- 1 Red small tower roof
- 1 Red large tower roof
- 1 Wizard
- 1 Instruction booklet
Take Refuge behind the Walls of the King’s Castle

The Trio King’s Castle set (P6841) is a monstrous affair, and it’s really cool too.
Here is where you can really do battle, since you get forces of both good and evil – white and black.
The bad guys bring a dragon-headed catapult to the party. The good guys have a mace-throwing cannon and a deadly crossbow. This, of course, is in addition to the swords and shields on both sides.
The gate has a nifty mechanism inside. You can twist the “gear” one way to let the gate down on its ropes or the other way to bring it back up again.
The king himself comes riding out on his valiant steed to lead his knights into the fray.
Check the list below to see all you get in a compete set of 214 building pieces.
- 10 Black size 1 angle bricks
- 2 Black size 1 bricks
- 53 Beige size 1 bricks
- 6 Black size 2 bricks
- 2 Beige size 2 bricks
- 2 Beige size 3 bricks
- 8 Black size 3 bricks
- 6 Black size 4 bricks
- 6 Beige size 5 bricks
- 1 Cannon projectile mace
- 3 Boulders
- 1 Brown crossbow
- 1 Set of arrows
- 1 Red boulder bucket
- 1 Red Trojan horse catapult head
- 2 Gray size 3 straight sticks
- 3 Gray size 5 straight sticks
- 22 Blue size 3 straight sticks
- 8 Blue size 5 straight sticks
- 12 Blue size 6 straight sticks
- 4 Red size 6 double bent sticks
- 1 Cannon (mounted)
- 4 Torches
- 2 Angled Banners
- 1 Small straight Banner
- 2 Large straight Banners
- 2 Sets of brown wheels with black size 3 brick axles (6 pieces total)
- 1 Brown size 1 brick with stick knobs
- 1 Drawbridge assembly (includes black bars)
- 2 Small gray solid panels
- 4 Medium gray panels with arched windows
- 1 Large gray panel with breakaway
- 2 Gray square window frames
- 2 Gray rectangular window frames
- 2 Large gray solid panels
- 1 Large gray solid panel with shield
- 2 Large gray solid panels with banners
- 2 Gray castle tower upper level bases
- 2 Large cardboard panels for frames
- 2 Small cardboard panels for frames
- 1 Castle door lion emblem
- 1 White horse
- 3 Black and red soldiers
- 2 Gold and blue guards
- 1 Gold and blue king
- 6 Swords
- 3 Black and red shields
- 3 Blue and white shields
- 1 Instruction booklet
The Trio Siege Tower: When You Really Want to Be Nasty

The tall, nasty-looking drink of water above is the Trio Siege Tower set (P9046). It’s dark, just like the Wizard’s Castle. Does this mean the Wizard is the dude who sends it out on its missions? Maaaybe.
The dragon-headed gadget in the middle is a battering ram that swings back and forth. You only get one dark knight to push the tower on its wheels, so maybe you should get some more to help him.
It only takes 46 pieces to build this imposing figure. They’re in the list below.
- 2 Dark gray size 1 bricks
- 1 Orange size 5 brick
- 6 Dark gray size 4 bricks
- 1 Orange and gray dragon head
- 2 Orange left dragon limbs
- 2 Orange right dragon limbs
- 4 Brown wheels
- 1 Light gray stone panel
- 1 Orange size 2 straight stick
- 8 Red size 3 straight sticks
- 8 Red size 5 straight sticks
- 2 red size 5 double bent sticks
- 1 Yellow ladder
- 2 Brown window frames
- 2 Multicolored cardboard window panels
- 1 Knight’s shield
- 1 Knight’s sword
- 1 Knight
- 1 Instruction booklet
Swing That Hammerpult Like You Mean It

As far as I can tell, the Hammerpult is a fictitious creation made for the Trio universe. It’s a catapult, of sorts, that has a hammer-like pounder on one end.
I’m not sure how the knights make it work.
No matter. It’s still pretty cool.
Check out the list of pieces you get in a complete Hammerpult set (P9047).
- 4 White size 1 bricks
- 6 White size 3 bricks
- 1 Tan size 2 brick
- 4 Tan size 3 bricks
- 2 Tan size 4 bricks
- 1 Gray boulder
- 1 Brown bucket
- 1 Brown counterweight holder
- 4 Blue size 3 straight sticks
- 4 Blue size 5 straight sticks
- 8 Blue size 5 double bent sticks
- 2 Blue size 6 straight sticks
- 1 Blue size 8 straight stick
- 2 White window frames
- 2 Multicolored cardboard window panels
- 2 Blue banner flags
- 1 Instruction booklet
Man the Trio Watch Tower with Your Best Knights

The picture of the Trio Watch Tower set (R2500) above isn’t the greatest, but it’s all I’ve got for now. In that configuration, it doesn’t really look like a tower, and it doesn’t show how you can turn your crossbow into a mobile attack device.
If you did put the crossbow on wheels, it would presumably belong to the dark knight and would give him a little something to attack the tower with.
You can’t see it here, but this set comes with a break-away wall to show where the enemy launched a successful assault.
Below is the list of 64 pieces you get in the Watch Tower set (R2500).
- 1 Beige size 1 rounded brick
- 4 Black size 1 angle bricks
- 1 Black size 2 brick
- 5 Black size 3 bricks
- 4 Black size 4 bricks
- 6 White size 1 bricks
- 1 White size 2 brick
- 2 White size 3 bricks
- 2 White size 4 bricks
- 4 Brown wheels
- 1 Red size 3 straight stick
- 1 Red size 5 double bent stick
- 1 White flag
- 1 Picture panel
- 7 Blue size 3 straight sticks
- 4 Blue size 5 straight sticks
- 4 Blue size 6 straight sticks
- 1 Gray small wall
- 1 Gray frame
- 2 Gray walls with arched windows
- 2 Gray large walls
- 1 Gray fall away wall
- 1 Gray set of crossbow arrows
- 1 Brown crossbow
- 2 Gray swords
- 2 Blue and gray shields
- 1 Red and black knight
- 1 Gold and blue knight
- 1 Instruction booklet
Wizard’s Castle Revisited by a Winged Lion!

Trio decided to bring back the Wizard’s Castle (R2773) with the addition of a winged lion and a knight as bonuses.
This set is fairly difficult to find.
The lion and the knight are really the only differences between this set and the original Wizard’s Castle shown above.
Ride Your Favorite Dragon into Battle in the Arena

The Trio Dragon Battle Arena set (R2774) isn’t that hard to find. I finally got a few sets myself and took some pictures (like the one above) for you.
You get a Harry Potter-esque setup that includes a good dragon and an evil dragon. The neat part is that you can have knights sit on the back of each one to guide them into battle.
I think the dragons in this set are of better quality materials than those in earlier sets. You can move their wings independently and easily.
There is one small mistake in the instruction booklet. You have to rotate the picture panel 90 degrees from what is shown in the manual so it attaches to the top and bottom sticks, rather than to the left and right sticks because they are too far apart.
This is a rather large set of 91 building pieces that are in the list below.
- 22 Dark gray size 1 bricks
- 1 Red size 2 brick
- 1 Dark gray size 4 arched brick
- 1 Red size 2 straight stick
- 13 Red size 4 curved sticks
- 2 Fireballs
- 1 Gray window frame
- 1 Multicolored cardboard window panel
- 1 Green dragon head
- 2 Green dragon legs
- 2 Green dragon wings
- 1 Green dragon tail
- 1 Brown banner flag
- 1 Red half dome roof
- 1 Green size 2 brick
- 3 Dark gray size 3 bricks
- 2 Dark gray size 5 bricks
- 1 Tower floor
- 4 Red size 3 straight sticks
- 10 Red size 5 straight sticks
- 1 Red size 6 straight stick
- 2 Red size 8 straight sticks
- 1 Gray curved wall
- 1 Gray flat wall
- 1 Gray curved wall with arched window
- 1 Gray barred wall
- 1 Red dragon head
- 2 Red dragon legs
- 2 Red dragon wings
- 1 Red dragon tail
- 1 Black, gold, and red knight’s shield
- 1 White and blue knight’s shield
- 2 White knight’s swords
- 1 Black and red knight
- 1 Gold knight
- 1 Instruction booklet
Two Small Sets to Add Small Pieces to Your Arsenal

Trio Medieval sets T0794 and T0795 each have just 8 pieces. One has the good guy, and the other has the bad guys. T0794 is simply called King’s Knights; T0795 is the Wizard’s Knights.

In each, you get a knight, a horse, a shield, and a banner on a pole in the appropriate colors.
The good knights also have a lance and a sword. The evil knights have a flail and a battle axe.
Set Sail on the King’s Warship

Maybe you never thought of doing battle on the high seas, but with the Trio King’s Warship set (T3211) you can.
This is another large set (100 pieces) that includes another working cannon and a realistic looking ship with blue and white striped cloth sails.
See the checklist of pieces included in the Warship set below.
- 2 Blue size 8 straight sticks
- 8 Brown size 5 straight sticks
- 4 Blue size 3 straight sticks
- 8 Blue size 2 straight sticks
- 2 Blue size 6 double bent sticks
- 2 Blue size 5 double bent sticks
- 8 Brown size 4 curved sticks
- 4 Yellow size 1 bricks
- 8 Brown size 1 bricks
- 7 Brown size 2 bricks
- 6 Gray size 3 bricks
- 2 Brown size 3 bricks
- 2 Yellow double angled bricks
- 1 Yellow triangular panel
- 4 Brown curved ship sides
- 2 White size 5 picture panels
- 1 White cabin roof
- 2 Brown window frames
- 2 Multicolored cardboard window panels
- 1 Brown rudder
- 1 Yellow lion head
- 1 Steering wheel
- 1 White small ladder
- 2 Yellow flag banners
- 4 White guardrails
- 2 White and brown ship ends
- 2 Blue and white sails
- 2 Yellow barrels
- 1 Yellow and blue cannon
- 1 Yellow treasure chest
- 1 Black mace projectile
- 1 Captain
- 1 Sailor
- 2 Swords
- 2 Shields
- 1 Instruction booklet