The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

An open-air sewer system that was covered piece-by-piece over 300 years.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

The red letters in the literary pavement leading to the library form a mysterious code.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

The Liverpool street made famous by the Beatles is real.

19th century tunnels burrowed under Liverpool.

Water-themed sculptures guard this unusually square structure.

These semi-natural waterfalls hint at the park's Victorian-era industrial past.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

The ornate structure is part of a building boasting more marble than the Vatican.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

The community pools that the community refused to give up on.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

The world's oldest surviving music hall was also once a freakshow.

A scattered trail of street art adds a pop of color to the city's stark structures.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

One of only two commuter aerial tramways in the United States.