These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

The real-life site of Ichabod Crane's infamous gourd attack.

The oldest continuously inhabited street in America.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Roadside collection of 65,000 signs.

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

Featuring the largest CinemaScope screen in Pennsylvania, this drive-in has entertained moviegoers for more than half a century.

A natural gas leak provides a flickering flame beneath a waterfall.

This small island was the first National Wildlife Refuge ever created in the United States.

A monument celebrating the idea of reaching inaccessible places.

After Havre burned down, the best place to build was under the ashes.

The only road through the heart of Glacier National Park.

An architect's childhood fantasy treehouse made real.

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

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Every year, the colorful murals of Montreal get a complete makeover.

A historic Montreal market that was the city's agricultural hub for over century.

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

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

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