Lombard Street crooked block

The one-block section of Lombard Street between Hyde and Leavenworth Streets features eight hairpin turns and was constructed in 1922 to reduce the hill's steepness. The block is one-way eastbound and is a frequent subject of tourist photographs and local traffic regulations. It is often described in guidebooks as the 'crookedest' block in the city, though other streets also claim similar distinctions.