More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

After the parade, students throw their beads on the tree hoping for good luck on exams.

The greatest collection of New Orleans masking and processional traditions covering everything from Baby Dolls to Skull and Bone gangs.

The final resting place of New Orleans' most famous voodoo priestess.

A museum dedicated to Nantucket's legacy as the "graveyard of the Atlantic."

Everyone's favorite neighbor is remembered fondly in this small-town church.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

A wall of chewing gum moonlights as collective art.

A walk through the historic city center, under the streets of Seattle.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The celebrated eyesore created by starry-eyed sweethearts.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.