Hot springs monkey spa in the middle of Hell's Valley.

An exquisite tunnel of cascading flowers.

A magical place that lets you play in and explore the world of Studio Ghibli.

Near the mouth of the Yodo River, this museum offers visitors six floors of hands-on learning about Osaka's raw sewage.

The Hanshin Expressway goes right through its 5th, 6th, and 7th floors.

The world's first successful water-powered cotton mill paved the way for the factories of the British Industrial Revolution.

This Victorian marvel of engineering and artistic prowess is nicknamed the "Cathedral of Steam."

Its impressive still-working beam engine is a thing of beauty for engineering history fans.

This poignant WWI memorial looks like a lighthouse 100 miles from the sea.

A collection of early 19th century trams set in a reconstructed period village.

The longest stone bridge in England has an impressive history that dates back over 700 years.

The world's largest collection of artifacts from our history of industrial gas use is hard to simply pass.

A spooky juxtaposition of caves and graves gives this legend-filled cemetery a particularly haunting vibe.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

The highest lighthouse in Scotland shines from an abandoned island.

The last manually operated turntable ferry in the world.

This observatory within Europe's first dark sky park offers stunning views of the night sky.

What happened to the three lighthouse keepers who vanished from this place remains a mystery over a century later.

Scotland's only funicular railway is also the United Kingdom's highest.

One man spent 10 years building a spectacular section of road because no one else would.

Enter the world under the hill at this ancient UK burial chamber.

A giant pineapple, a symbol of hospitality, and an amazing vacation rental option.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.