The Rijksmuseum is a Dutch national museum dedicated to arts and history in Amsterdam. The museum has on display 8,000 objects of art and history, from their total collection of 1 million objects from the years 1200–2000. The collection contains more than 2,000 paintings from the Dutch Golden Age by notable painters such as Jacob Isaakszoon van Ruisdael, Frans Hals, Johannes Vermeer, Jan Steen, Rembrandt, and Rembrandt's pupils. Probably the most well known pieces of art are The Milkmaid (c. 1658) painted by Johannes Vermeer and The Night Watch (1642) by Rembrandt.
The Rijksmuseum was founded in The Hague in 1800 and moved to Amsterdam in 1808, where it was first located in the Royal Palace and later in the Trippenhuis. The current main building was designed by Pierre Cuypers and first opened its doors in 1885. On 13 April 2013, after a ten-year renovation which cost € 375 million, the main building was reopened by Queen Beatrix. In 2013, it was the most visited museum in the Netherlands with a record number of 2.2 million visitors.
The museum has taken the unusual step of making some 125,000 high-resolution images available for download via its Rijks Studio software, with plans to add another 40,000 images per year until the entire collection of one million works is available, according to Taco Dibbits, director of collections.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.