Los Palacios y Villafranca is a city located in the province of Seville in the Andalusia region of Spain. The city was formed in 1836 through the merger of two separate settlements: Los Palacios, which occupied a hilltop as an urban settlement by the 17th century, and Villafranca de la Marisma, which originated as a dispersed shepherd settlement. According to census data, the city has a population of approximately 35,000 to 38,000 inhabitants.
The city has a long history spanning from Roman times, when it was known as Searotinus, through the Muslim period when it served as a possible rest stop on routes between the ports of Gades and Hispalis. The name "Los Palacios" derives from a palace called Atalayuela built by Pedro I El Cruel in the 14th century on the remains of an Arab castle, originally intended as a hunting lodge. Villafranca de la Marisma was founded by King Alfonso XI and later became property of the Dukes of Arcos. The city's most notable religious structure is the Parroquia Mayor de Santa María la Blanca, a 15th-century Baroque church featuring an organ by Francisco de Ortiguez and an altarpiece by Flemish painter Pablo Legot.
Los Palacios y Villafranca is recognized for its traditional Andalusian gastronomy, including dishes such as gazpacho, liebre en salsa, and garbanzos con pringá. In 2013, the city set a Guinness World Record for preparing a fritada de tomate (tomato sauce). The city hosts several annual festivals, including the Cabalgata Reyes Magos in January, Carnaval in February, and the Feria de Farolillos in late August. Local handicrafts include saddlery, ceramics, chair making, and weaving.