Visitors may notice something strange walking through this quaint German town.

This research hub in the Amazon Rainforest is perched amid one of the world's most biologically diverse landscapes.

This cave system allegedly holds the "metallic library" of a lost ancient civilization.

This museum’s collection includes rescued birds, fine art, and a collection of shrunken heads.

The devil masks on display at this small museum are part of an annual festival that has been taking place for centuries.

One of the most historic cemeteries in Quito is an eclectic mix of architectural styles and famous tombs.

This overlooked, beautiful convent hides an original Hieronymus Bosch among its many treasures.

Paris' linguistic guide to the international language of, yes, love.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

One of Jeff Koons’s largest sculptures and his first commemorative work.

Executions were once held near this beautiful 18th-century fountain.

A haunting collection of the vanished and disappearing natural world.

The history of radiation is on safe display at the foot of a radiation science laboratory.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

Flowers have mysteriously appeared on her effigy every day for the last 150 years.