One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Guatemalan womanizer, venerated during Holy Week.

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

This giant sculpture is both loved and disliked by the local community.

The lake that fills and empties itself at random.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

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.

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

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

This massive monument has been telling the time for 150 years—at a slight angle.

The last Victorian market in Belfast.

One of the largest lenses of its kind ever created, this former ship beacon has been brought down to Earth.

Northern Ireland's Brobdingnagian stepping stones.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

The atmospheric road was never meant to be so creepy.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

It was once nicknamed "the most bombed hotel in Europe."

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

High on a hill, an obelisk stands as tribute to local soldiers from several wars.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.

The world's first electric battery-powered submarine.