The walls of the iconic dome are hollow and have a secret stairway.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

Electrical pylon in the shape of Disney's beloved mouse.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A morbid piece of memorabilia from the most famous shipwreck in current history is just one of the many poignant artifacts in this Canadian museum's collection.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Even Henry David Thoreau found this glacial pothole irresistible.

Come for the gun-toting hillbilly madman, stay for the ice-cream loving basketball bears.

3,200-square-foot mural inside Dartmouth Library depicts the history of America with images of human sacrifice, ancient gods, and other unspeakable terrors.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

This working class sculpture pounds his hammer all the livelong day.