The neighborhood is most famous for Lombard Street, the one-way section on Russian Hill between Hyde and Leavenworth Streets, in which the roadway has eight sharp turns (or switchbacks) that have earned the street the distinction of being "the crookedest street in the world". The switchbacks design, first suggested by property owner Carl Henry and built in 1922, was intended to reduce the hill's natural 27 percent grade, which was too steep for most vehicles to climb. As it is one of the most visited tourist attractions in the city, this section of the neighborhood is frequently crowded with tourists. Tourists also frequent the cable car line along Hyde Street, which is lined with many restaurants and shops.