A stunning medieval castle houses this eclectic, interactive tribute to all things wine.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

The location of the last witch trials of Italy, known as "The Salem of Europe."

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

An alchemist's “magic door” stands in the middle of a Roman park.

A three-shelf library serves as a memorial in the Jewish cemetery of Krems.

An ornate private entrance to the Vienna subway built specifically for the emperor.

This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

Site of the 1889 murder-suicide of crown prince Rudolf and his lover Mary Vetsera.

Heralded as one of the prettiest castles in all of Czechia.

This monumental work of art symbolizes the coming together of a previously divided city.

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

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

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

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

A slice of central Asia in the middle of Berlin.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.