A toy store with a century-long history preserves the craftsmanship of playthings of the past.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

This hidden green space is the city's second largest conservatory.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

Rebuilt remains of a temple to Roman god Mithras.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Hidden beneath the streets of London is a secret subway that only carried mail.

A historic house left in "dramatic still life."

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

The 28-foot granite map plots the locations of 40 theaters in New York City.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

New York City's smallest piece of private property.

Ride the subways of yesteryear.

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

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

The oldest landmark of Toronto is a testament to shifting sands.