A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

One part local history, 99 parts gruesome haunted house.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Explore 10 acres of environmental sculptures.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

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

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The first declared National Monument in the United States.

A layered tribute to the work of mosaicist Isaiah Zagar.

Odd outsider art installations surround a Gold Rush-era ghost town.

Famously misunderstood wonder of the ancient world

A hand-built folk art installation covered with messages of God's love.

Try not to get slimed in Tribeca.

Towering basalt columns, a creation of fire and ice.

An enormous, inside-out glass globe built in 1935.

A trash dump made beautiful by nature's power.

The ghostly remains of an accidental sea.

A toxic ghost town sitting atop a massive coal fire.

A bizarre house filled with an astounding array of collections.