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.

The commemorative stone column conceals a secret laboratory.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

At the top of the hour, figures of the London department store's two co-founders emerge and bow to each other.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

Hidden in plain sight, this creepy sculpture watches from above.

A statue of the original Pearly King is hidden in a church's crypt.

This coffee shop lies hidden beneath a historic church.

London's smallest police station is barely the size of a phone booth.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

Its collection includes a broad array of social, geographic, graphic design, and political history.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The shop where the girl who inspired the beloved character once bought sweets is now a book-themed commercial curiosity.

These shopping center benches are actually a modern art installation.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

A nourishing complex of found object art, paintings, and sculptures that celebrate key figures in Black history.