Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

Built by Portuguese colonizers, the palace is now the seat of power for the independent nation.

A futuristic, brutalist masterpiece that is also strangely prison-like.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

See how paper is made the old-fashioned way.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

Long before ultrasounds and modern testing, medical specimens like these conjoined twins helped physicians learn about congenital anomalies.

An old Danish political institution where members of government can grab a drink off the record.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Week-long block party becomes a competition for the best decorated street.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

In Namibia there is an installation that explores the intertwined linguistics and existential beliefs of an imaginary community.

Road signs in Namibia mark the location of one of the five major circles of latitude.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.