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

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

This hidden museum examines the complex history of the country's law enforcement.

Belfast's namesake river still winds below the city center, hidden from sight.

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

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

The house where the writer spent his formative years.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

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

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

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

The most loyal of little dogs, or a Victorian era publicity stunt?

Protecting the dead from opportunistic body snatchers.

The final resting place of soldiers' loyal canine companions.

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

The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

The Liverpool street made famous by the Beatles is real.

The quiet field that inspired one of the most famous songs of all time.

This former iron ore mine comes alive with fascinating stories of its history.

This historic lighthouse has been reincarnated as the perfect picnic place.

This engineering marvel is the longest bridge in Canada and one of the longest spans in the world.