Merlin’s Infrastructure Mod offers a number of structure blocks that automatically generate a structure when the block is broken.

Merlin’s Tower is a simple tower with a staircase in the middle leading to a second floor and on up to the top of the structure.

The tower takes up an 9 x 9 block space with the door facing the North. Place the structure block in the MIDDLE of the space where you want the structure to generate.

If it does not come out the way you want, use the Clearing Block remove the structure.