Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

This free museum is building a collection of books that are banned, censored or burnt around the world.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

Two stunning 17th-century libraries and a cabinet of curiosities.

This spooky statue sits outside a famous Prague theater.

A mocking tribute to the past and modern leadership of Prague.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

This seventh-century fortification marked the western border of the Lombard duchy of Spoleto.

At the base of this tower, a plaque marks the original center point of the Netherlands.

A uniquely preserved neo-Gothic church that is now home to a collection of art and woodcarvings.

Every winter, this former planetarium is transformed into a massive, brightly-lit Christmas ornament.

The cutest way to stay safe in traffic.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

A condensed piece of China floating in a Dutch harbor.

A tiny house showcases the busy life of a local gnome.

Stained-glass windows inspired by Vincent van Gogh's paintings decorate this church in the town where the artist's career began.

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

This unique sculpture proved invaluable when it saved a train from careening off the tracks.

The location of the world's first telescope demonstration.

The world's largest collection of ships in bottles.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

An enormous Polaroid picture adds an artistic flair to Rotterdam.