Guadalajara, the capital of the Mendoza family, is a city brimming with history and cultural significance. Conveniently located near Madrid, this underrated city offers an easy and fun day trip from the Spanish capital. Its origins date back to prehistoric times, but it was during the Arab period that Guadalajara acquired its current name and began to take on the form we see today. During that time, the city acquired its surprising current name, derived from the Arabic "Wad-al-Hayara," meaning "Valley of Stones." But it was during the Renaissance that the noble Mendoza family elevated the city to its peak, constructing architectural gems like the Palace of El Infantado. Today, Guadalajara is a relaxed city, filled with activities and historical treasures waiting to be discovered with a local guide.