Location of a reliquary containing bone fragments of 18 saints.

This whimsical fountain pays tribute to Toronto's four-legged friends.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A colorful architectural gem in Seattle’s uniquely modern Central Library.

A wall of chewing gum moonlights as collective art.

This working class sculpture pounds his hammer all the livelong day.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Another in a long tradition of legends regarding infernal seats.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

This memorial to a family's dead son has survived a century of hurricanes and earthquakes.

These red and black houses were awarded to the firefighters who saved their city from an enormous blaze.

This community-driven organization uses education and eco-friendly technology to protect the environment.

Invading U.S. troops were first seen from this now-abandoned tower, leading to the Spanish-American War.

The abandoned remains of this once-thriving hotel looms over the city, awaiting an uncertain future.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

The highest peak in Puerto Rico is home to a rare fern that can only be found on six trees at its summit.

On this Puerto Rican island, many abandoned naval ammunition bunkers sit open while a few have been padlocked by locals as personal storage.

This tiny home was originally a narrow alleyway.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

This small primate research island is teeming with playing, fighting wild monkeys.

The world's brightest bioluminescent bay.

Years of neglect and nature took a toll on this 19th-century lighthouse.