Inside this church are the alleged remains of the patron saint of lovers, epileptics, and beekeepers.

A beautiful but toxic fountain of mercury.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

A clear blue swimming hole with hidden caves, still unexplored.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The ancient tomb acts as a calendar that keeps perfect time.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.