This spectacular track has run continuously since 1882.

The last surviving roundhouse in the United Kingdom also plays host to a popular annual beer and music festival.

North America's largest accredited model railroad museum.

A historic freight system that found the true gold rush is in tourism.

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

One woman's dream became a train hotel in her backyard.

This 19th century train workshop is a treasure trove of railroad history.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

What might look like a cliffside sacrificial altar at first glance is actually a stone compass pointing to cities and lighthouses all around the world.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

A close look reveals that the Scottish monument is just slightly off-kilter.

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

A bay of elaborate, historic toilets are held in high esteem at this Scottish dock.

An 18th-century lighthouse built on a 16th-century castle is now a monument to the maritime beacons of Scotland.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

Scotland's oldest medieval bridge is also among the last reminders of early medieval Aberdeen.

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.