An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

A Jenga-style cylindrical tower of books that appears to go on forever.

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

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Where manatees are the snowbird vacationers in these balmy Florida springs.

A storybook European village in Berkeley.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

A modern mechanical planetary system, part of a 10,000 year clock.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Japanese national treasure originally built in 593 CE.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

This semi-secret storybook hedge maze is also the oldest garden in the city.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.