The kids who attend kindergarten in Karlsruhe, Germany, do so in a giant feline. The whimsical Kindergarten Wolfartsweier is built like a big white cat.

Constructed in 2011 and designed by Tomi Ungerer and Ayla Suzan Yöndel, the cat building includes a door for a mouth below a whisker-lined nose, windows for eyes, and a classroom in its belly. For added fun, kids can even ride down its tail that doubles as a slide.

In terms of architecture that inspires a playful imagination, the Kindergarten Wolfartsweier is remarkable for its embrace of an alternative, animalistic design for what a school can be.