A once grand hotel is being retaken by the wilderness it once capitalized on.

An inconspicuous footbridge beloved by San Diego locals.

This massive redwood tree has a hole in the base big enough to drive through.

Huge masonic hall in Philadelphia with lavishly themed rooms.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Treehouse motel and treehouse-building school.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A hollow cement depiction of time's inexorable effect on the human body.

The highest bridge in America was built for an almost unnervingly small amount of money.

A giant 400-acre preserve in North Florida for displaced wolves.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

The longest navigable underground river in the United States is home to countless blind and albino animals.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The only rotating bar in New Orleans has been slowly spinning since 1949.

The longest living non-clonal organisms on Earth.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

A natural gas leak provides a flickering flame beneath a waterfall.

An extraordinary mixture of natural beauty and man-made phenomena.