The abandoned transportation hub hides within the Glasgow attraction it once served.

These rusting, skeletal structures are monolithic monuments to Glasgow's industrial past

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

The commemorative stone column conceals a secret laboratory.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

This mountain is one of the largest in Scotland but is better known for its hollow insides.

An ancient stone wall formed by lava that was a frequent stop during funeral marches.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

This hill nestled in the Scottish lowlands was a ritual site for over 4,000 years.

Water-themed sculptures guard this unusually square structure.

Not far from Mount Rainer, an iron wonderland claims the landscape.

The highest point in Washington state is a volcano covered in glaciers.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Only known mainland rookery of the threatened Stellar sea lion.

On the Oregon coast is a natural hole that seems to be draining the sea.

From here, the loch appears to take the shape of mainland Scotland.

Scotland's only funicular railway is also the United Kingdom's highest.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The ritual has been performed uninterrupted for nearly 700 years.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

This volcanic plug boasts the longest recorded history of any Scottish stronghold.