This legendary urban waterfall creates a dazzling display of rainbows.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

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

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Race through the maze, get your name on the sign.

Watch the newest land on the planet form before your eyes.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

A tunnel of hardened lava along Maui’s famous Road to Hana.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This black shoreline is made up of exploded lava particles.

The last working windmill in Northern Ireland.

The easternmost point on the island of Ireland.

This windmill was used for well over a century.

This memorial site offers scenic views and a peaceful place for reflection.

An uninspiring grass verge transformed into a therapeutic community garden.

Beautiful scenery provides the backdrop for an abandoned coastguard facility.

The father of Belfast medicine is buried in the graveyard of this 13th-century church, which now lies in ruins.