Quite simply the largest tree in the world (by volume).

Four hundred granite steps were built into this massive rock by the National Park Service.

Nine caves filled with recently-discovered archaeological finds under the houses and the streets of the most ancient district of an old town.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

One of the first intercontinental ballistic missile sites in the United States.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

This house was the subject of an Edward Hopper painting, which in turn helped inspire the design of the Bates house in Alfred Hitchcock's 'Psycho.'

In Cold Spring, New York, a shrine containing Godzilla and an assortment of plastic dinosaurs stands dedicated to a teenager who died in a car accident in 1996.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This black church sits alone among a field of lava rock.

Three columns of volcanic rock shoot out of the ocean.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

These three lighthouses played a fundamental role in the maritime life of Eastham.

Home of the only civilian casualty at the Battle of Gettysburg.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

This beautiful Cape Cod beach offers dazzling views and an interesting historical footnote.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.