Copenhagen's celebrated theme park and gardens.

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

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

A beautifully eclectic mix of architectural styles.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

An abandoned Ecuadorian prison that once held ex-presidents and notorious con artists is now a carceral museum.

Countless grotesque faces stare out from this eerie Prague art wall.

A concrete mushroom that divided Stockholm residents for nearly a century.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

A heated statue pays tribute to one of Sweden's great actresses.

This unique sculpture is often overlooked by pedestrians.

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

Sweden's oldest animated sign is still lighting up the skyline today.

Stockholm's narrowest alley is barely over two feet wide.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

Sweden's "good old days" painstakingly re-created in a model village.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

It houses the remains of a 17th-century version of the Titanic.

The library's graceful rotunda is like a bibliophile's temple.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A fascinating insight into daily life in the Eastern Bloc.