Juuoh Park

Juuon Park (Japanese: ジューオーパーク Hepburn: Jūōpāku) is an artificially created floating island that extends from a small uninhabited island that is home to the Beast King Friends. and It is the setting for Pachislot Kemono Friends. Juuon Park has a dome shape, but inside the dome, the natural environment is artificially reproduced by electric energy. The towering UFO tower in the center is an integrated resort, and it is a tourist facility that combines various things such as theaters, restaurants, amusement parks, sports facilities and hot spring facilities.

Reference
https://www.sammy-product-news.com/product/kemono-friends/%3F/page:7