A photographer spent 40 years documenting America's unique roadside attractions in more than 11,000 photos. Here are the coolest ones.

The Library of Congress just released more than 11,000 images of roadside attractions and classic Americana into the public domain. Critic and photographer John Margolies took the high-resolution photos over 40 years of traveling around the country. The photos document drive-ins, car washes, diners, and other unusual structures. Visit Business Insider's homepage for more stories. The Library of Congress is doing the important work of memorializing some of the US' most oddly charming roadside att...