A labyrinthine underworld of tunnels and caverns hides beneath the city.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

Medicinal spa created with the discharge from a geothermal energy plant.

This stunning concert hall has become a symbol of Iceland's national recovery.

An encyclopedic collection of mammal penises.

This tiny museum's sizable collection is jammed into a former underground public toilet.

An unusual building on a "desolate hill" features the works of an Icelandic sculptor.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

This tiny watering hole claims to have the smallest bar counter in Europe.

This enigmatic artifact remained buried in a churchyard for years.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

A black cat protests the City Guild in Riga's Old Town.

The reconstruction of this prominent building fulfilled a long-written command.

3,000 market stands in five former Zeppelin hangars.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A beautiful and moving memorial set on a little island in the middle of the river in Minsk.

A sculpture of graceful storks sits atop this fountain in Independence Square.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

Brace yourself for the slowest, scariest, most spectacular drive, down the Drakensberg Escarpment.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.