In the middle of the level is a small house in the light world that has baby versions of the Bosses. On the wall is a picture of Wario.
In the top right corner of the level is an owl statue from the game Fez. Directly above it is a secret passage, which has a statue of Q-bert inside.
A couple of rooms down and to the right is a room with two platforms. In there is a fish from Super Mario Bros.
In the room after you get through the pollo maze is a sign poking fun at Mario Kart. It reads "Barrio Kart".