Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

A celebration of Colombia’s premier contemporary artist.

The Avenue of Mausolea is a series of grand palatial tombs.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

Once a luxurious flagship of the Soviet Union, this Brutalist structure remains a landmark of Tashkent’s communist past.

Prowl through this sprawling bazaar under a massive Soviet-era dome for delicious eats.

Extremely isolated Silk Road caravanserai in the middle of nowhere.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

Lonely minaret stump of a destroyed city.

A boulder carved into the shape of the cosmonaut's head.

Museum dedicated to the terror regimes of Hungary.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Once the home of a hermetic monk, this cave now houses a small church.

Time stands still at this serene burial ground in the center of Budapest.

A 19th-century artistocrat's mansion, turned into a library, hidden in a modern library.

A stunning Art Nouveau cinema in the heart of Budapest.

The metal leaves on this tree are engraved with the names of Holocaust victims.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.