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

If you've ever roamed down the eggshell-colored, spiral ramp of the 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, always testing new ideas and materials," the director of Wright's Fallingwater, Lynda Waggoner, told Business Insider.

Here are some of his greatest works.