Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

Standing atop Wellington Hill is the world's tallest three-sided obelisk.

Bridge that died in war and was resurected.

This fortified town dating back to the 1400s is often described as an open-air museum and is a protected National Monument of Bosnia and Herzegovina.

The only monument in Slovenia celebrating the famous writer, who stayed there for one night entirely by mistake.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

Dating back to the early 12th century, this is the first Augustinian priory established in England.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

The colonial city's social history is reflected in its fanciful door knockers.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.

This unofficial museum details the rise and fall of Colombia's most notorious narcotrafficker, Pablo Escobar.

One of England's most famous churches hides a pair of little known architectural treasures.

Inspired by Thomas Stothard's painting of the "Journey to Canterbury," albeit with Canterbury natives.

Ramsgate’s Royal Harbour has the unique status of being the only Royal Harbour in the United Kingdom.

These purpose-built WWII air raid shelters, which run half a kilometer under the town of Mellieħa, are among the longest in Malta.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

This garage is frozen in the late 1990s, full of rare and untouched cars and motorcycles.

A whimsical bridge adorned with decorative dragons.

The celebrated eyesore created by starry-eyed sweethearts.

A perilous medieval road leading right into the sea.

One of the oldest cathedrals in the U.K. houses a priceless early manuscript.

Royal burial place of the kings of ancient Britain.