This 1967 experiment in modular architecture was designed to be a new model for urban living.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A toxic ghost town sitting atop a massive coal fire.

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

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

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

A historic and oft-filmed prison stands in a Chicago suburb.

A hidden oasis just north of Chicago's Chinatown.

The highway's southernmost spot is a beloved local attraction.

This midcentury chapel is a bold architectural statement and a symbol of Indiana's Lutheran heritage.

The large rock formation where the Shawnee prophet Tenskwatawa stood and encouraged his warriors during the Battle of Tippecanoe.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

Also known as the Osaka Garden, this garden was originally built in 1893 as part of the World's Columbian Exposition.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This Moab institution functions as both a rock store and a small natural history museum.

In the middle of a New England forest sit the crumbling ruins of World War II-era ammunition storage bunkers.

An actor's tribute to a former mentor.

The last remnants of a lakeside airport that was bulldozed overnight by the mayor of Chicago.

One of Frank Lloyd Wright's final works was this UFO church.

The murals have transformed a residential alley into a vibrant drive-through gallery.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.