These spartan apartments are provided to clergymen visiting Vatican City.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The site of the first battle of World War II.

A striking Soviet memorial commemorates the liberation of Belarus from the Nazis.

This peaceful, round shrine in the middle of the Sri Lankan jungle acts as a beacon of peace.

An ancient stone fortress considered by many to be the eighth wonder of the world.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

An enigmatic temple with complicated history, at the center of Sri Lanka.

A Sri Lankan tea factory's ironic take on the Los Angeles landmark.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

This elaborate temple was built around one of the Buddha's teeth.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

This artificial archipelago was supposed to resemble a map of the world.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

Gdańsk's lion mascot features in a trail of bronze sculptures scattered all across the city.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

Modern art commemorates one of the first military actions of World War II.

This museum houses and extensive collection of technology contributed by the Polish people.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

This ex-prison dates back to the Middle Ages.

The apartment building where JFK's assassin lived after defecting to the Soviet Union.

The world’s narrowest house makes for an awkward, four-foot-wide living space.