Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

At the point of oceanic inaccessibility, you can't get farther from dry land without leaving the planet.

It houses the remains of a 17th-century version of the Titanic.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

This disused Cold War bunker has been restored to all of its early 60s glory.

Existing for more than four centuries, the last of Hakone’s historic teahouses serves a sweet, mold-based rice drink.

This crumbling 14th century chapel became so unstable the roofing apparently collapsed during a wedding ceremony, narrowly missing the curate's head.

These ruins of Francis Bacon's once-magnificent manor are hidden in the English countryside.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

This public toilet built in the famous Amsterdam School architectural style is a Dutch national monument.

Transport yourself to the 1980s era of video games at this themed restaurant and bar.

This famed Silk Road oasis was one of the largest cities in the world before it was destroyed by a Mongol horde.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Terrifying derelict military hospital once housed a recuperating Hitler.

Where giant ships go to die.