Indoor pool by Keith Williams Architects.
O-M-G... I HAVE to go here!!!!!!! "The Tropical Island Resort in Krausnick, Germany"
Cave home - with indoor pool - like a dream
27 Absolutely Stunning Underground Homes - http://www.buzzfeed.com/scott/stunning-underground-homes
Underground pool connecting 2 villas.
Corinthia Trip Advisor reviews
A hidden sunken trampoline??? This is exactly what I need! Maintain a big backyard but still have the trampoline you've always wanted!
Someone who lives underground might like this. Next problem: who would live underground?
Underground Spa. Sleek minimal white indoor pool. Elegant pool ladder.
Basement conversion for five bedroom terraced new house in South End, London W8 by Builders GB