The ruins of a once-grand mansion in Northern Ireland are now thought to be haunted.

It is said a heartbroken man visited the gap every day to stare blankly out at the sea.

This gnarled old tree supposedly sprouted from seeds kept in the pocket of a 16th-century Spanish sailor.

A memorial to a goat culled during a foot and mouth disease outbreak guards a series of fantastical caves.

The atmospheric road was never meant to be so creepy.

The lake that fills and empties itself at random.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

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

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

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

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

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

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.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

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

The statue honors a beloved bird that once roamed St. George's Market.

The last Victorian market in Belfast.

You can enjoy a (possibly haunted) stay at the medieval Norman castle that was once a favorite hunting lodge of King John.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A wonderfully strange collection of 500+ stuffed frogs doing people things.