Alcalá de Henares, a city with rich historical significance, offers a variety of activities and sites worth exploring. One of the most notable attractions is the University of Alcalá, a UNESCO World Heritage site. Founded in the 15th century, the university boasts stunning architecture and a beautiful campus that reflects its educational legacy.

Another significant site is the birthplace of Miguel de Cervantes, the famed author of "Don Quixote." The Cervantes Birthplace Museum provides insight into his life and works, allowing visitors to appreciate the literary heritage of the city. Walking through the historic center, you can admire the blend of Renaissance and Baroque architecture, with charming streets and plazas that invite leisurely strolls.

The Cathedral of Alcalá de Henares, also known as the Cathedral of St. Justus and St. Pastor, is an important religious site featuring a mix of architectural styles. Its interior is worth a visit for those interested in ecclesiastical art and history. The Archbishop's Palace, located nearby, is another architectural gem that reflects the city's ecclesiastical past.

For a taste of local culture, the plaza de Cervantes serves as a gathering place, surrounded by cafes and shops. It’s an excellent spot to relax and enjoy the atmosphere. Additionally, the city hosts various festivals throughout the year, such as the Medieval Market, which showcases its historical roots and local crafts.

Nature enthusiasts can explore the nearby Henares River, offering scenic walking paths and opportunities for outdoor activities. The surrounding countryside also presents options for hiking and enjoying the natural beauty of the region.

In summary, Alcalá de Henares is a city rich in cultural and historical experiences, making it an intriguing destination for those interested in literature, architecture, and Spanish history.