The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

An ancient octagonal weather station named for the eight Greek gods of wind.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

The location of this historic castle was inspired by a donkey.

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

The most loyal of little dogs, or a Victorian era publicity stunt?

This Scottish museum is the only one in the world to focus not on one religion but all of them.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A sweet symbol marks the place where torturous executions were once carried out.

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

Largest lake in Great Britain measured by surface area.

Once a black market electronics marketplace, now an otaku shopper's paradise.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

Eighty million natural history specimens call this gargantuan museum home.

An unusual round church in London with a Templar past.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.