Snake Alley is a street located in Burlington, Iowa, once recognized by Ripley's Believe It or Not as the Crookedest Street in the World.
The physical limitations and steep elevation of Heritage Hill inspired the construction of Snake Alley in 1894. It was intended to link the downtown business district and the neighborhood shopping area located on North Sixth Street, of which Snake Alley is a one-block section. Three German immigrants conceived and carried out the idea of a winding hillside street, similar to vineyard paths in France and Germany: Charles Starker, an architect and landscape engineer; William Steyh, the city engineer; and George Kriechbaum, a paving contractor. The street was completed in 1898, but was not originally named Snake Alley, as it was considered part of North Sixth Street; some years later, a resident noted that it reminded him of a snake winding its way down the hill, and the name stuck.
The alley originally provided a shortcut from Heritage Hill to the business district. Bricks were laid at an angle to allow horses better footing as they descended. Unfortunately, riding horses back up the alley often resulted in a loss of control at the top; for this reason, even to this day, Snake Alley remains a one-way street, with all traffic heading downhill.