Puerta de Aguilera is the principal Gothic gateway of Berlanga de Duero's New Town in Soria province. Dating from the 14th century, this emblematic entrance features a Gothic arch framed by Renaissance elements including classical columns and a decorative scallop shell motif. Beyond the gate extends an arcaded street supported by wooden pillars on stone bases, exemplifying Castilian Renaissance architecture as it leads toward the Plaza Mayor. As one of five access points into the walled settlement, the Puerta de Aguilera remains a tangible symbol of the town's medieval defensive heritage and architectural sophistication.