The Mauritshuis museum houses the Royal Cabinet of Paintings which consists of 841 objects, primarily Dutch Golden Age paintings. The collections contains works by Johannes Vermeer, Rembrandt van Rijn, Jan Steen, Paulus Potter, Frans Hals, Hans Holbein the Younger, and others. Probably the most famous painting in Mauritshuis is The Girl with a Pearl Earring (ca. 1665), one of Dutch painter Johannes Vermeer's masterworks. It has been in the collection of the Mauritshuis gallery in The Hague since 1902. The another masterpiece in collection is the Anatomy Lesson of Dr. Nicolaes Tulp painted by Rembrandt van Rijn (ca. 1632).
Originally, the 17th century building was the residence of count John Maurice of Nassau. In 1820, the Mauritshuis was bought by the Dutch state for the purpose of housing the Royal Cabinet of Paintings. In 1822, the Mauritshuis was opened to the public and housed the Royal Cabinet of Paintings and the Royal Cabinet of Rarities. In 1875, the entire museum became available for paintings. It is now the property of the government of the Netherlands and is listed in the top 100 Dutch heritage sites.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.