El Mirador del Rio is a hollow mountain transformed into a coffee place, overlooking the island of La Graciosa. El Mirador was built by Cesar Manrique, a local artist that before his death in the filled the island with astonishing architecture.
I absolutely love this. Reminds me of an adobe bubble house I saw in an article many years ago. Richard Olsen's Book Handmade Houses Showcases Beautiful and Unusual Homes : Architectural Digest. Probably for my future little house in Europe.