An important pilgrimage site for pagans and early Christians, named for a Celtic goddess-turned-saint.

An 1814 castle that hosts an exhibit of "explorabilia".

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

An iconic view point of the Sea of Galilee offers a look into Israel's past.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

In Egypt's expanding metro area, many of the neighbors are dead.

An endless sea of white conical domes.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

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

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

Stonehenge has nothing on Castlerigg’s views.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

This hidden green space is the city's second largest conservatory.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.