Lines from a walking song are etched into a rock in Natural Bridge State Park.

These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

Thousands of birds nest in the cliffs while arctic foxes prowl below.

This museum is a portal to 20th-century Denmark.

The ruins of a 13th-century monastery that long served as a place of refuge from wars and raids.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Legend says these rocks used to be hunting dogs, a story that may have inspired Sherlock Holmes' most famous case.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The world's oldest family-run magic shop is hidden beneath a bustling London thoroughfare.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

Barbies stare from the walls, sit on the tables, and even pop out of cakes at this quirky cafe.

Some of the best Persian food in New York comes from the front window of an unassuming pizza shop.

The tiniest little stage in New York.

This overgrown mountain village has been abandoned for nearly a century.

A deserted island in southwest Japan that once sheltered persecuted Christians.

Once a popular watering hole among longshoremen and shipyard workers, this neighborhood treasure spans more than 100 years of Red Hook history.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.

A kaleidoscopic warehouse-maze of handmade neon signs.

The abandoned fishing village was swept right into the sea.

English antique dealers with a taste for the unusual.