No need to strap in for a "ride" on this walkable roller coaster.

A small but immensely extravagant palace built by the "Night King."

This "floating railway" is one of the world's oldest monorail systems.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A modern English garden of eccentric beasts, follies, and oddities.

An ancient Viking village in North America that predates Columbus by 500 years.

A striking 12th-century-style castle built on the edge of a cliff.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This 16th-century monastery has been turned into a surrealist architecture compound.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Peek through a transparent pyramid and drink in the mountain made of books.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

This elegant arc of a waterfall marks a religious turning point.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

This Parisian café sticks almost exclusively to an ethos of reuse.

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

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

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

This expansive bridge in the Canadian wilderness was originally just built for friends.