At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

Step into Monet's world at this fine-dining restaurant in the middle of a New Jersey sculpture park.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.

A huge musical instrument played by the ocean.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

A shockingly detailed small scale recreation of the temples of Abu Simbel.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Mexican food and folk art.

This enormous World War II relic is one of the largest wooden structures in the world.

These were the largest wind chimes in the world when artist Tom Van Sant created them for a California mall in 1967.

A grove of "candelabra redwoods" deep in California's Lost Coast.

This mesmerizing medieval monastery-cave complex sits thousands of feet above ground overlooking a valley.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

George Martin's Caribbean recording studio now rots within the shadow of an active volcano.

This California estate was either haunted by ghosts or the Marx brothers.