Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

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

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

A mud brick kasbah with a history of lavishness and traitorship.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

Large Hadron Collider and the Birthplace of World Wide Web.

Where Mary Shelley’s "Frankenstein" and John William Polidori's "The Vampyre" were born.

A rare, flower-shaped example of Brutalist architecture in Switzerland.

Walk through a restaurant's refrigerator door to reach this hidden bar.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

The severed head of a 17th-century Irish martyr lies within an intricate golden shrine.

Experience what life was like in Ireland during the Viking and medieval ages.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

The broken skateboards that became a poignant memorial to a murdered skater.

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

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

This coffee shop lies hidden beneath a historic church.