Open up more building possibilities and visual style. Includes Diagonal and Door Corner Walls for new room and corridor shapes, small pieces for technical building, and various magnetic walls with accessories. It's topped off with a pair of fully-functional Secret Door Corners, and Open Arch wall with two types of inserts so it can create a portcullis or another secret door. Sculpted in the Vaulted Dungeon style with columns and arches on the walls.

This pack works best combined with a collection of basic pieces, such as a Starter Set or Core Set.