At the United Kingdom's only residential library you can sleep among the books.

Destruction from Armenia's 1988 earthquake inspired an artist's sculptures of scrap metal.

This little medieval church hidden in the center of Yerevan was lost and rediscovered—twice.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

A geological oddity topped with a 2,000-year-old pagan temple.

These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

An ancient necropolis of magnificent tombs.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

An unassuming London park is actually a pilgrimage site for modern clowns.

This popular square's history as the former site of a church is right beneath your feet.

Makers and sellers of the original and finest York Ghosts.

One of the shortest streets in York has an especially odd name.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

A bit of retro transportation flair preserved in the world's largest department store.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

A memorial to the politician who became Great Britain's first fatality to be caused by a locomotive.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

A geological wonder shrouded in myth.

This park is home to a collection of important industrial and religious sites.