The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

This 16th-century house tells the city's history through old artifacts and quirky tales.

The longest and tallest aqueduct in Britain can actually be sailed across.

A castle in the Scottish Highlands has been continuously inhabited since the 1300s.

An optical Illusion once believed to be an electrical phenomenon.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

This tiny island is home to the world's largest colony of Northern gannets.

A trio of giant megalithic stones in the middle of a golf course.

Every New Year's Day, locals don gaudy costumes and dive into the frigid Firth of Forth.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

This mundane post marks the old location of the city's main postal hub.

The world’s first museum dedicated to the history of childhood opened in Edinburgh in 1955.

The colorful stairs are made with marble from the world's major quarries.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

The Scottish Reformation leader's grave was paved over and is now a parking lot.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

A six-ton wedding present for the King of the Scots.

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

This stream-carved gorge has inspired poets, hidden smugglers, and trained soldiers, all without losing its beauty.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.