This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The largest monastery in Singapore is home to a crematorium, a college, and one of Asia’s largest indoor Buddha statues.

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

Terrapins of all colors and shapes are quick to bring fascination (and possibly long life) at this museum.

Three memorials honor the victims of the worst sports stadium disaster in Britain.

The final resting place of George Washington's Grandma.

The heroic tale of a remarkable pup who refused to leave her master's side, no matter what.

Final resting place of John Middleton "The Childe of Hale."

This whimsical public art installation is a unique homage to Liverpool's industrial heritage.

A seaside town with no sea in sight.

This enormous spiral sculpture looks strangely out of place on the edge of a housing development.

Much of what constituted mid-century Liverpool now litters a beach outside of town.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

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

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

A quiet patch of astroturf laid out between a building that seems to be splitting in half.

The busy transport hub is home to the tallest airport slide in the world.

A Singapore shrine to an unnamed German girl who has become a local deity.

One of Edinburgh's most popular works of street art is located well off the beaten path.