Acres of natural wonders left behind by a socialite-turned-gardener.

A 1940's shrine dedicated to drowned fishermen on the outskirts of Honolulu.

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.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Two stunning 17th-century libraries and a cabinet of curiosities.

A crucified and bearded female saint.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Tiny memorials honor individual victims of the Holocaust.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A Mysterious Masonic tomb in San Luis Obispo.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

This stately structure has been abandoned for half a century.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Oldest building in California still in use.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.