An institution dedicated to the towering buildings that make up skylines in New York City and around the world.

Tirelessly maintained by a Wisconsin man named JFK.

"Iron Age" creatures fill this huckster's rusted metal sculpture garden.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

A Wild West jailhouse that slid down the mountainside.

Opened in 1956, the first modern indoor shopping mall in the world was inspired by the shopping arcades found in European cities.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

An abandoned fish-shaped drive-in gets a second life as a restaurant.

A majestic hotel that also stands as a historic relic.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

Spectacular views await visitors to this lake.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

Striking images of New Orleans history, including colonizers, soldiers, Klansmen, scientists, sharecroppers, and more, are depicted in frescoes that line the walls of this transportation hub.

This 1960s kinetic artwork has been restored and is once again whirling away in downtown Minneapolis.

A place to eat for on-the-run agents and espionage enthusiasts.

This beautiful Brooklyn monument over a crypt memorializes a grim and largely unknown story from the American Revolution.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

The most confusing clock in New York.

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

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

This painted marvel is San Francisco's 400-foot ode to urban biking.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.