Arco de San Esteban anchors the medieval city walls of Burgos, representing the second-oldest surviving gate of the city's original twelve entrances. Constructed in the 13th century with distinctive Mudejar architecture, the archway features a striking horseshoe-shaped opening of ashlar and masonry crowned with decorative brickwork. Two flanking towers frame the main passage, with a gallery of six arches serving as a historical lookout. Built by Moorish craftsmen, this gate exemplifies the cultural synthesis of medieval Spain, connecting the city's northern districts to the castle fortification on the hill above while maintaining exceptional preservation of its defensive and architectural heritage.