A temple dedicated to the 13th-century Alevi Turkish dervish credited with bringing Islam to the Balkans.

A little-known museum of Ancient Roman and Ancient Greek artifacts.

A beautiful 1920s tower filled with local hidden gems.

This historic tall ship traveled 1.5 million miles around the globe, and once did duty as the mythical pirate ship in Peter Pan.

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

Children's author May Gibbs's beloved stories about the tiny, human-like "Gumnut Babies" are immortalized in bronze.

Australia's only active volcanoes and highest peak are located on these remote islands thousands of miles away from the mainland.

A spectacular impact crater in the rugged heart of Central Australia.

A perfectly preserved abandoned criminal asylum in South Australia.

This rickety old shed hides a trove of secondhand literary treasures.

The sand is such a bright white that on sunny days you practically need sunglasses to look at the ground.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

An exercise in radical design and social living that became the epicenter of Soviet spy networks in London.

One of the greatest movie directors of all time lived and worked in this London flat from 1926 to 1939.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

London's amazing modernist public square that never was.

The "shampooer of kings" who opened London's first curry cafe was a celebrity in the 19th century, but is all but forgotten now.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

A boutique perfumery fashioned to look like a Victorian-era shop.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This 1920s Dutch barge is now a floating bookstore.