Before online banking and smartphone apps, there was "commuter banking" in the subway in Downtown Brooklyn.

This 220-year-old house is a reminder of New York City's Dutch past.

The East Village tenement from the cover of Led Zeppelin’s 1975 album has a tea shop on the ground floor.

There are owls with glowing eyes in Herald Square.

A bit of retro transportation flair preserved in the world's largest department store.

The lead horse on a Disneyland merry-go-round that is older than the park itself.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

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

A majestic hotel for dreamers rises from the center of a fairytale wood.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

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

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

Ancient human remains unearthed around the iconic monument.

Famously misunderstood wonder of the ancient world

An architectural oddity hides in plain sight on this iconic London bridge.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Metal horses galloping through a London fountain provide a link to the city's past.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.