At 207 feet, one of the world's longest continuous escalators.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

The land is home to swimming ponies and a legendary 18th-century treasure.

The trials and tribulations of marking Poe's grave.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

Visitors to this public park will also find the ruins of an old western fort.

At an isolated roadside rest area stands a monument marking where famous Western star Tom Mix died in 1940.

Every year, festive decorations appear on this juniper tree located in the median strip of a busy highway.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

A rare wayfinding portmanteau of “Street” and “Avenue.”

One of the largest open-pit copper mining operations in the entire country.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

Giant telescope mirrors built in a spinning furnace under a college football stadium.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

This ancient trail has claimed the lives of over 2,000 people.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Stairs often replace streets on the steep slopes of this old mining town.