The remains of this deep, dark mine have left behind a haunting rocky warren of tunnels.

At this cozy bar tucked down a hidden Galway backroad, Guinness makes the Gaelic come out.

Though they've since been renamed, these two streets hint at Dublin's darker days.

The home of Ireland's last leprechauns is officially protected by the European Union.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

These morbid carvings remind churchgoers of the inevitability of death.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

This overlooked street light once served as a KGB dead letter box.

Where condemned pirates met their grisly end at the gallows on the River Thames.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

A sacred well steeped in Pagan roots on the West Coast of Ireland.

Local legend says the remains of Father Christmas lie within the medieval grounds.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

A small but charming botanical garden that contains many exotic plant species.

One of the few places in Portugal where the Celtic ritual of wearing large wooden masks is still practiced.

Portugal's National Pantheon has a history of curses, collapses and financial problems.