Concrete Treehouse

The Concrete Tree is a surreal building accessible through the toilet in Lightbulb World.

Features
The exterior of this building has a huge stairway leading inside and a floating brick, which will take you to a small forest with a large statue. Interacting with the statue will cause a Polaroid photo frame to surround Totsutsuki, as the symbol on her dress moves around and she pulls two balloons out of her mouth.

Heading upstairs into the building, the main room features a green bridge stuck in the floor and tables with books containing surreal illustrations inside. The door in the bottom right of the room will take you to a stairway, leading to an arcade with many strange characters running around. There are also arcade cabinets with odd title screens that can be viewed, one of which unlocks wallpaper #27. Going through the large door by the purple books leads to a room with a bunch of chairs, a pencil statue, and a large glowing doorway which takes you to the Neon Village.

Directions
Totsutsuki's Nexus → Lightbulb World → Concrete Tree