The silly symbol for an underground protest group is now scattered around the city.

This ex-prison dates back to the Middle Ages.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

A small part of Russia that does not touch any other part of Russia.

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

Several 12th-century ruins can be found inside this historical market.

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

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

During the renovation of this bas-relief, the constructors added one unusual element.

This antique thermometer honors the creator of the first universal temperature scale.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

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

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

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

A Christian monastery stands on what was once a holy Incan temple.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

It took 82 years and four different plaques to finally get the story right.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

A 125-meter long "tribute to the Brazilian people."

A bright little alley in La Boca is a part of tango history.