Alcalá de Henares was a roman city called Complutum, and related with this you can found some interesting places like:

• Archaeological Museum from the Comunidad de Madrid. It was a monastery from the XVII c. but now you can see a collection of Roman Art. The admission is free.
  
  
• Casa Hippolytus. An ancient Youth School from the Roman City, with thermae and mosaics.
  
  

Alcalá de Henares was an important city during the Spanish Golden Age too, and now is famous because the writer Miguel de Cervantes was born here. Some of the places that you can see are:

• University of Alcalá. (San Diego Square, s/n) It was founded by the cardinal Cisneros in 1499, and today you can see some of his buildings.
  
  
• The Cervantes Square. Is the main square of the city. It has this name because there is a Cervantes sculpture. Here you can see the Alcalá Town Hall too.
  
  
• The Oidor (hearer) Chapel. It's situated at the Cervantes Square. Set on fire during the Civil War, today you only can see the bell tower and part of the apse.
  
  
• Calle Mayor. It's the longest street with arcade around Europe. It starts at the Cervantes Square.
  
  
• The Cervantes Birthplace Museum. The admission is free and you can see the place where the writer was born.
  
  
• Alcala de Henares Masterly Cathedral. There are only two Cathedrals in the world with this title, that means that their canonical members were also Masters.
  
  
• Hospital Our Lady of the Mercy or Antezana. It was an aristocratic house that became Charity Hospital in 1483. The admission is free.
  
  
• House of Interview. This building has this name in memory of the interview that took place between Queen Elizabeth The Catholic and Cristobal Colón.
  
  
• Archbishop's Palace. It was built by Toledo's prelates as a fortress-castle, but in 1939 suffered a fire that destroyed most of the inside.