A formerly glacier-tipped volcano that inspired none other than Jules Verne.

This elaborate tunnel is the first structure composed of cast concrete in the United States.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

One of only two remaining Victorian-era greenhouses in New York.

Ride the subways of yesteryear.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

A modern zoetrope on the New York City subway.

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

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

This bomb shelter-themed bar has barely changed since it opened.

From working out of his garage to the James Beard semifinals, one Tucson baker has kept his fan base—and his grains—local.

This church on a Tohono O'Odham reservation has stood since 1797.

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

Thousands of years ago, Indigenous people painted images onto these canyon walls that are still on display today, provocative, mysterious, and enduring reminders of the people who lived here long ago.

A ghost town that held steady longer than most, but finally gave up the ghost.

The fifth-longest natural arch in the world, and the longest outside China.

The location where the iconic movie character declared it was time to go home.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

The world's largest military aircraft cemetery.