Built for an exposition in 1915, these horticultural displays have stood the test of time.

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Oldest building in California still in use.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Air-raid tunnels hidden beneath this opulent hotel provided shelter and an escape route—and one of the world's longest slides.

Legend says this sacred tree was a gift from goddess Athena.

This 18th-century project to build the world's tallest gravity dam was never completed.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

More than 50,000 gannets claim the cliffs of Bonaventure Island.

The little house that stood up to a disastrous flood has become a symbol of perseverance.

Despite its name this unique art piece was established to commemorate a tragic flood.

A contemporary fresco movement illustrates the region's rich history.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.