Toledo is the city in central Spain, known as a tourist center, in which there are plenty of interesting historic monuments. Among them it is a must to mention the Gothic cathedral with many chapels, in which sacred treasures and paintings of many artists are kept (among others: El Greco's and Goya's), the Alcazar towering over the city (the fortress built in 11th century), Castillo de San Servando (the medieval castle on the bank of the Tagus River) and numerous churches (above all the San Tome from 14th century, the San Juan de los Reyes from 15th/16th century and the San Roman from 12th century) and palaces.