A sixth-century Byzantine cistern hidden below a modern carpet store.

One of the newest mosques in a city filled with thousands.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

This church houses the tomb—but not the remains—of St. Nicholas, the likely progenitor to Santa Claus.

The home-turned-museum of Barış Manço, the mustachioed Turkish Elvis for children.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

The most metal church of all time was built in record time because of an international, pious pissing contest.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

Turkish adventurer antiques in the heart of the Grand Bazaar.

A deadly ancient portal to the underworld.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Macabre astrological automaton clock dating to the late 1400s.

Spend your honeymoon where the Devil had his wedding.

A mocking tribute to the past and modern leadership of Prague.

Roman ruins top white travertine terraces formed by ancient hot springs.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

This unique house, the only one of its kind in Brooklyn, was built as part of a real estate developer's showcase.

“Historical” markers commemorating the sites of fictional events depicted in a popular jidaigeki novel series.

A precursor to Taro Okamoto’s iconic Tower of the Sun.

In Asakusa, Tokyo's very own Walk of Fame.

A sad reminder of the World War II bombing stands largely unnoticed on a street corner.

An extraordinary collection of 18th century anatomical waxworks.