This incredible viaduct was part of the Victorian railway boom and helped the Midland Railway navigate tough terrain.

A museum marks and documents the site of the Titanic's launch.

These engineering masterpieces are a dominant feature of the Belfast skyline.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

360° views of the city plus five floors of optical illusions and hands-on science.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The western face was supposedly left clock-less to snub the Welsh.

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

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

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

The dramatic remains of an abandoned farmhouse sit high on the edge of a remote hillside.

The United Kingdom's smallest working cathedral also serves as a quaint bed and breakfast.

This stately estate house features a tower covered in a bright, modern mural.

A bizarre stone beast lurks on the beach of a popular tourist island.

England's largest white horse isn't even white.

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

Nestled amid the peaks and lochs of the Scottish Highlands, this inn and pub has played host to outlaws and ghosts.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

Hidden in a Scotland museum is a copse of extinct tree stumps.

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

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

A scattered trail of street art adds a pop of color to the city's stark structures.