A controversial memorial at the place where Captain Cook met his violent end.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This blowhole is supposedly caused by a trapped monster.

This unusual lava tube spouts seawater during high surf.

A true treehouse near Hawai'i Volcanoes National Park.

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

Submerged lava formations create incredible waterworks.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

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

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

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

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

This black shoreline is made up of exploded lava particles.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

Tiny silver and copper fish set inside blue-green lights are like windows to the underwater world.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large park in Dublin.

A particularly disconcerting tribute to Irish martyrs.

A devastating booze inferno poured through the streets, claiming several victims who drank it.

The modern birthplace of Irish freedom.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.