An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

A city park that sits on top of a freeway.

The final resting place of infamous outlaw Clyde and Marvin Barrow.

Visitors to this shop will find fossils, minerals, meteorites, skeletons, oddities, and much more.

The highest point in Louisiana, Driskill Mountain at 535 feet above sea level.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

This mid-19th-century dugout was once home to a Swedish family as they erected their homestead.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

The "Seinfeld" diner.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

The largest permanent Monopoly board makes one of the longest games even bigger.

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

A whimsical village of unique treehouses resides in a Washington forest.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

A former utopian healing center created by a huckster and built by derelicts.

One of the most unusual geological features, recognizable from a dozen hit movies.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.