Kloster Eberbach is one of Europe’s best-preserved medieval Cistercian monasteries, founded in 1136 and renowned for its austere Romanesque architecture and historic wine cellars.

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

A former Nazi lookout tower with a magnificent view of the Rhineland.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The last Tsar of Russia constructed this private church just so he could attend services when visiting his wife's hometown.

Crop circles inspired this whimsical garden in Germany.

A German apartment building hosting as many trees as human occupants.

A statue honors the children who fought Nazis in Poland.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

The last king of Poland was interred in this church nearly 200 years after his death.

This bell stars in a tragic love tale and is said to make wishes come true.

This German bone house contains the remains of some 20,000 souls.

The many—66 to be exact—faces of the German forest.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

The final resting place for the remains of 143 Habsburg royalty.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

A temple to modernity, tucked away amid Barcelona's more well known museums.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

Catalonia Tradition: Beating the hollow Christmas log until it defecates in your fireplace.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.