Home to the deepest rift anywhere on Earth.

This work of art by Matthew Mazzotta resides in this park dedicated to the first black legislator in Idaho.

The largest outdoor art gallery in the Northwest United States.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

This rustic old building is said to be the most photographed barn in America.

Inside this striking glass building, visitors can see thousands of dinosaur fossils in the positions that nature deposited them more than 150 million years ago.

Jail from the 19th century that was built by inmates.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

Though considered an eyesore by some, this boxy Brutalist high-rise plays a significant role in Sydney's past.

A statue of a Scottish cultural icon in central Sydney.

This work of art was designed to represent the Tarpeian Way Quarry that once dominated the area.

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

This letter written by Queen Elizabeth II in 1986 won't be opened until 2085.

This preserved village shows the modest lifestyles of the area's 19th-century Chinese gold miners.

The platform atop this verdant volcano was built with the help of a royal elephant.

These two delightful animal-shaped buildings host a visitor center and wool shop.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Eat your Big Mac in a DC-3.