Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

A technicolor place of worship for Elevationists.

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

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

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

Obelisks and stone pineapples in the Irish countryside.

A moody and picturesque riverside ruin overgrown with vegetation.

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

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

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

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

This beautiful eden was once the vacation home of Tahitian royals before Marlon Brando bought it.

Site of James Cook's historic observations of the 1769 transit of Venus.

The retired vessel is South America's first floating museum.

This antique rail car has been reborn as an urban cafe.

Enormous array of antennae fill a desert valley.

The large collection of pre-Columbian pottery might make you blush.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.