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

Walk in the footsteps of the gods and straddle two tectonic plates.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This Connecticut chapel is a starkly modern, and surprisingly colorful, architectural rebel.

An abandoned Depression-era zoo hidden just off the highway.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

Home of Philip Johnson, one of the 20th century's most influential architects.

With some 500,000 books across five buildings, this bookstore is a reader's paradise.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

This seaside Scottish holiday rental lets you live out your bookselling dreams.

A remote island holds what claims to be Scotland's smallest cinema.

This abandoned oil depot produces world's longest echo in a manmade structure.

Small museum dedicated to the founder of electromagnetic theory.

Wonderfully preserved Victorian factory, complete with a preserved steam powered engine house.

A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

Where the sleeping monsters of Scotland's oil industry are left to rust.

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

Built during the Scottish boom in the oil industry, the village was never inhabited.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

Long abandoned underground complex to keep royals safe from a nuclear war that never came.