Known as one of the most famous parks in Honduras.

These colorful sawdust illustrations are trampled into non-existence only moments after they are finished.

This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

This fortress in Honduras was built to resist pirates, but its builders had more to fear from the British.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

These markers are used to determine the ground stability of the Strip.

Elevated freight railway turned wildly successful urban park.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

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

Historic funicular railway, believed to be the shortest railroad in the world.

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

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

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

The legendary building that needed ghostly approval before being built.