This fresco-covered medieval monastery hangs from the side of a steep cliff.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A pair of connected skyscrapers form this symbolic gateway.

For over 40 years, this quaint little house has teetered on a rock in the middle of a river.

A sinuous path among steep cliffs creates a stunning sight in southwestern Serbia.

Structure built from the skulls of vanquished foes.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.

Tucked away inside this concrete building is a church and its grand display of brutalist architecture.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

One man's remarkable private collection of art from around the world.

The best place in the world to buy tinned fish.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

One of the smallest bookstores on the planet.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

A garden in Lisbon filled with giant porcelain creatures.

This charming candle shop has been in business since 1789.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.