These Man-Made Structures Are a Stunning Sight to See
Gibbon Treehouse, Laos 13. Guggenheim Museum, Bilbao, Spain 14. Hotel Marques de Riscal, Spain 15. Krzywy Domek, Sopot, Poland 16. Lotus Temple, New Dehli, India 17. Casa Batlló, Barcelona, Spain 18. Markthalle Altenrhein, Staad, Switzerland 19. Montaña Mágica Lodge, Chile 20.