14 of the greatest buildings by America's most famous architect

If you've ever roamed down the eggshell spiral ramp of the spherical Guggenheim Museum in New York City, you've had the pleasure of experiencing a Frank Lloyd Wright original.

When it comes to American architecture, Wright is a legend.

He championed organic architecture, or the belief that buildings should live in harmony with the environment.

Wright "created a new form that would resonate over time, alway testing new ideas and materials," the director of Wright's Fallingwater, Lynda Waggoner, tells Tech Insider.

Here are his greatest works.

Fallingwater, a home built over a 30-foot waterfall in southwest Pennsylvania, is a National Historic Landmark. "It was connected with nature in a very intimate way," says Waggoner. "Its furnishings grow from the house like the house grows from its setting."

The interior is just as harmonious. "He was always looking ahead, not backward," says Waggoner.

One of ten of Wright's works nominated as World Heritage sites, the Unity Temple in Illinois revolutionized church architecture. "He turned his back on traditional church architecture," Waggoner says.

NOW WATCH: China is building the world's largest radio telescope to detect signs of life billions of light years away