This unusual rock formation looks like an apple that has been neatly sliced in half.

It's believed King John of England stayed at this 13th-century castle before riding off to sign the Magna Carta.

Overlooking the harbor is a beautiful neglected mansion guarded by two Egyptian sphinxes.

The scene of the United Kingdom's most famous UFO incident, dubbed the "British Roswell."

This feline raises a friendly paw at drivers barreling toward the freeway.

This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

A crumbling hospital from the 1850s on Roosevelt Island.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The carved medieval stones stand near the ruined abbey's parking lot.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

This giant mural of Santa Muerte in downtown São Paulo reminds passersby of their own mortality.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

These particularly resplendent rodents are the state animal of Maharashtra.

The 10-foot-tall vegetables belong to Michigan’s first food rescue program.

An enigmatic mural hiding in plain sight in one of São Paulo's busiest metro stations.

In the heart of Medellín, an artsy urban complex sets the stage for demonstrations and protests.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

What's believed to be the country's first shrine is, in Shintō mythology, the annual meeting place of the gods.

This small bridge serves as a symbol of South America's independence.

A catapult rock from Gotland’s 13th-century civil war is still lodged in Scandinavia's best-preserved medieval city wall.