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

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

On the Oregon coast there is a natural hole that seems to be draining the sea.

Beautiful steampunk ghosts of early Massachusetts.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

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

Eclectic collections, artwork, and some feline friends fill the writer's former home.

An eatery for UFO seekers on the Extraterrestrial Highway.

A snapshot of the city's fascinating voodoo culture.

The headquarters of a secretive order is also a beautifully-designed park.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

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

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

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

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

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

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

New fungal and bacterial species call this deadly lake home.

Come for the flowers, stay for the bats!

A small, but award-winning beach known for its literally spotless reputation.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

The quintessential Japanese rock garden has existed for more than 500 years.