This former medieval prison now unlocks Estonia’s rich photographic history.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

Visitors can sit and study the board with this Estonian chess legend and International Grandmaster.

A large boulder was declared a local landmark by a popular vlogger.

The Guardian of Tallinn.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

Only a fragment of this 15th-century Dance of Death survives today.

This beautiful example of neoclassical architecture is one of Uruguay's most treasured cultural gems.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

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

Breathtaking and huge 430 year old maps of Italy.

Baroque celebration of the end of the Great Plague of Vienna.

A fortress built to pacify local uprising that had a stint as a Nazi concentration camp before becoming a five-star hotel.

The ruins of an abandoned church loom within a picturesque Ukranian village.

A former military outpost of Ivan the Terrible, the 16th-century church contains some of the rarest examples of Eastern Orthodox mural paintings.

Russia's own leaning tower was built on a tragic historical fable.

This Russian religious complex is a Frankenstein's chapel that includes influence from almost all the major faiths.

Amsterdam's former hotspot for public executions and dissections.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This no man's land slicing through the island is strewn with abandoned relics of another time.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.