Pieces you need:

 2 large rectangles

 2 arches

2 triangles 

2 semi-circles

1 play mat

Steps:

✔️ Step 1: Place the large rectangles on the ground on their long thin side parallel to each other about two feet apart.

✔️ Step 2: Place the arches directly on top of the rectangles.

✔️ Step 3: Place the  large playmat piece on top. Make sure the bend is towards the sky and not a V to the ground. 

✔️ Step 4: Place the triangle backrests and semi-circles on the ground attached to the rectangles to complete the tower bases.