Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Quite simply the largest tree in the world (by volume).

See massive fossils that are over 200 million years old in northeastern Arizona.

The magic's in the hole!

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

The private clubhouse for the members of the Academy of Magical Arts.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Famously misunderstood wonder of the ancient world

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A one-of-a-kind collection of a unique medium.

World-famous, Pink's still manages to keep its prized cult fetish status.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The yawning maw of this pagan visage is said to bite off the hands of liars.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Home to items never before seen by the public.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.