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

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

A beach made of semi-precious green sand on the Big Island of Hawaiʻi.

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

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

This unusual lava tube spouts seawater during high surf.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

A hidden three-foot-wide house separates these two regal churches.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

The stunning interior of this Gothic church is covered in ornate gold details.

Ancient catacombs form the foundation for this Rococo orgy of a church.

This giant sculpture made of trash is a critique of society's wastefulness.

Picturesque intersection of witchcraft and ancient Christianity.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

Hidden within an idyllic suburban garden is a memorial dedicated to the victims of a terrifying spree of killings committed on U.S. soil.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

The second oldest continuously operating bar in Louisiana.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.