A beautiful oasis town dating back to the Roman period still serves as reprieve from the brutal summer sun in Libya.

A surprising number of shipwrecks visible just off the Somaliland coast.

This cave located in the badlands of Somaliland contains some of the oldest cave art in Africa.

A MiG-17 fighter jet sits atop this memorial to the indiscriminate bombardment of Hargeisa.

The world's largest ship graveyard is the product of decades of corruption.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

An architectural relic that survived the hands of time.

This remarkably well-preserved mosque stands amid an 11th-century caravansary.

Stockholm's deepest subway station is also a stunning ecological wonder.

Stockholm's narrowest alley is barely over two feet wide.

Unfortunately, you can no longer spend a night in this single-person treetop hotel.

This chimerical bridge/tunnel appears to dead end right into the sea.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Swedish skyscraper with a 90° twist.

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

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

The world's first combination ski slope and power plant.

Hans Christian Andersen for the postmodern world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A striking symbol of the Bulgarian capital.

Sofia's legislative center is continuously reinventing itself.

A vast Communist-era exhibition space in the Bulgarian capital.

Taking the subway here means doing so over a bridge located in the middle of an estuary.