The term WALLED CITY IN SPAIN is referring to the city of Ávila, located in the autonomous community of Castile and León in central Spain. It is known for its medieval walls, which were built in the 11th century and are still standing today. Ávila is also home to a number of historical monuments, including the Cathedral of Ávila, the Convent of St. Teresa, and the Church of San Vicente. The city is a popular tourist destination due to its rich cultural heritage and stunning architecture.