A simple but powerful tribute to the 20 victims of the 1692 witch trials.

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This black church sits alone among a field of lava rock.

The oldest church in Iceland is one of the few to feature ornate decoration.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This fairytale-like structure is the last turf church ever constructed in Iceland.

One of the oldest cemeteries in Germany was originally used for victims of a cholera epidemic.

This sprawling Jewish cemetery is one of the largest in Europe.

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

A 12th-century fortress containing some of Berlin's oldest buildings.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

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.

Europe's official "zero-level," the equator of elevation.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.