The oldest working mechanical clock in the world.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

Inside this art museum resides one of Glasgow's most famous musical instruments.

An icon of the Battle of Britain is frozen in flight in a grand Victorian museum.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

What happens when a sculptor has to find a way around a 100-year-old copyright.

Tucked away amidst some of the most famous addresses in the world is New York’s only fraction of a street.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

Along the Palisades skyline are the ruins of a large mansion built in 1911 and demolished in the 1930s.

This museum’s collection includes rescued birds, fine art, and a collection of shrunken heads.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

A contemporary fresco movement illustrates the region's rich history.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

A whimsical bridge adorned with decorative dragons.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

A historic Montreal market that was the city's agricultural hub for over century.

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Copenhagen's celebrated theme park and gardens.