Like Avila, Spain is a city located in the Castile and Leon region of central Spain. It is known for its well-preserved medieval walls, which were built in the 11th century and are still standing today. The walls, which are 6 km long, are one of the best-preserved examples of medieval military architecture in Europe. The city also has many other historical sites, including churches, palaces, and monasteries. Avila is a popular tourist destination due to its unique history and culture.