The building, which houses a collection of El Greco's paintings, belonged in the 14th century to Samuel Halévy, the treasurer of King Pedro I. Later it became the property of Marquis Villena, a known alchemist. El Greco rented the house from Villena and lived in it with brief interruptions for 27 years. The ruined house and its garden was restored in 1906 by Marquis Vega-Inclán and the museum was established in it. The house and the museum was bequested to the Spanish state.
You can find more information on the Museo de El Greco at this page.
Recommended viewing from the collection:
The Web Gallery of Art contains 20 images of El Greco's paintings exhibited in the Museo de El Greco.