For more than 170 years, this family-run bakery has been serving Berlin’s best Baumkuchen, or “tree cake.”

South Korea's only sex-themed park.

New York City's smallest piece of private property.

"Enter and be entertained or annoyed by Dada in Walla Walla."

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

An eerie, derelict amusement park in Berlin.

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

A Japanese concept restaurant that feels like a party thrown by the monsters in your closet.

Stroll through a wonderland of stupendous moss-covered trees.

Op-art architecture designed for happiness.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

This museum promotes informed contraception by documenting its often secret past.

One of the best collections of wax anatomical models in the world.

The 43-mile route crosses through six islands with gorgeous views of the Seto Inland Sea.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Moss and stone turn this waterfall into an otherworldly liquid veil.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

The Habsburgs' royal collections of art and wonders.

Nightmarish example of the unintended consequences of weapons testing.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.