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

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

This university transit system is a 1970's vision of the future.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The land is home to swimming ponies and a legendary 18th-century treasure.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The "lovely red Vega" of the legendary record-settling pilot.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The site of the climactic scene from the classic horror film is now a historic landmark.

At 207 feet, one of the world's longest continuous escalators.