13. Hotel Costa Verde, Costa Rica
Located deep in the lush Manuel Antonio National Park in Costa Rica, Hotel Costa Verde is a vintage 1965 Boeing 727 airframe that was transported to the jungle canopy from where it was turned into one of the strangest hotels in the world. The two-bedroom suite on a coastal rainforest bluff has become famous with weddings, romance and honeymoons.
The Boeing airframe is set on a sturdy concrete block that elevates it 15 meters high up on the jungle canopy. It also has a wooden cabin built on the tail end from which guests can watch sloths, toucans, monkeys and other wild animals.