A surreal museum of extraordinary industrial objects.

The most visited, and possibly most controversial, museum in Germany.

Started as a kitchen garden, now the second largest botanical garden in the world.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

A nourishing complex of found object art, paintings, and sculptures that celebrate key figures in Black history.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

This museum explores the grim reality of life in the earliest British colonies in America.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

The eerie ruins of a remote abandoned hamlet said to be founded by the survivors of a shipwreck.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

An allegedly haunted mansion with a tragic, tawdry past.

What's that on the side of that building? Va Va Voom, it's Bettie!

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

Seattle's own bad art museum located inside Cafe Racer.

A walk through the historic city center, under the streets of Seattle.

Experience the "opulence, grace, and grandeur of Eureka's most famous Victorian Inn."

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.