Before he was forced to flee the country under Nazi rule, Albert Einstein spent his summers in this custom-built lakeside house near Berlin.

One of Indonesia's tallest, this waterfall takes a 390-foot plunge into the Lake Toba caldera.

Cascading waterfalls mark the gateway to the ancient burial place of Clan Macnab.

The forgotten and tragic story of the thousands of female convicts forcibly transported to Tasmania is told inside the ruins of this notorious 19th-century workhouse.

An icon of International Style architecture on the outskirts of Rotterdam.

A network of underground water channels that dates back to the Middle Ages.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

For this chef, an active volcano is his oven.

Eat a Nobel banquet from any year in the basement of Stockholm's City Hall.

This decommissioned nuclear power plant offers tours of its Communist-era control room and reactor hall.

Described as one of the Baltic region’s most daring and original construction projects.

A park full of outsider art, created by college students studying outsider art.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

The singer, actor, and activist lived here during his final years, and now it’s a museum dedicated to his legacy.

A retired firefighter created this contraption so he and his family wouldn't die if accidentally buried alive.

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

These lush botanical gardens employ the most purrfect pest control force.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

An opulent testament to the boom-and-bust history of industry in north central Indiana.

This bridge was constructed from the remains of the first Ferris wheel.

Where hikers on the Tecumseh Trail can exchange a dirty sock for a free geode.

These former theme park figures have a new lease on life outside a water plant-turned-restaurant.

This small Key West museum is packed with dozens of artifacts that illustrate the life of the iconic playwright.