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

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

This network of narrow, medieval passages has the most delightful name.

One of the shortest streets in York has an especially odd name.

A showcase of canine neckwear spanning five centuries of doggie fashion and function.

A vintage penny arcade hidden in the back of a fun fair-themed bar.

Decrepit Victorian public lift is a white-knuckle ride.

This purpose-built dinosaur museum is shaped like a pterodactyl and holds fossils that were found in its very village.

The most playful of the life-sized statues that make up Singapore's "People of the River."

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

Two gilded cherubs perched on a church bell tower have been reminding visitors of the finitude of life since 1760.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

The now-quiet remains of coastal artillery defenses that were used in both World Wars.

This foreboding medieval castle was twice besieged by barons rebelling against the English king.

This stream-carved gorge has inspired poets, hidden smugglers, and trained soldiers, all without losing its beauty.

The UK's oldest theme park slowly slips away.

Follow the original medieval paths that wind through this intriguing section of the city.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Giant, friendly pelicans in Central London, the most unlikely of places.