This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

This elegant arc of a waterfall marks a religious turning point.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

A little-visited waterfall in an otherworldly landscape.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

An ancient chamber filled with wonderful rock art and a Neolithic carving of a human face.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

The final resting place of New England's last "vampire."

The first newspaper printed by an expeditionary force was published in this colonial mansion.

The site of the largest mass execution in Rhode Island history, haunted by the ghosts of hanged pirates.

The headquarters in Salem doubles as an occult art gallery.

One man’s hobby is another man’s world of metal wonders.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.