An acoustic anomaly with a mysterious cause.

A hidden three-foot-wide house separates these two regal churches.

At high tide this strange footbridge appears to have no purpose whatsoever.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

Toss a Frisbee through the ruins of this Colorado gold mining town.

An exotic wildlife habitat right off The Strip.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

This labyrinthine resting place of Black American leaders has been reclaimed by nature.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

This charming candle shop has been in business since 1789.

This 19th-century church is now a popular roller rink.

This giant statue of a vulva became internationally famous after an American exchange student got stuck in it.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

A retro walk through the history of the tube.

The smallest restaurant in the world.

A simple tribute to the microscopic arachnid that gives its juices and its life to help make a speciality German cheese.

A collection of intricate sculptures so small they have to be seen through a microscope.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

An artsy hidden staircase leads to breathtaking views of San Francisco.