The United States Holocaust Memorial Museum (USHMM) provides for the documentation, study, and interpretation of Holocaust history from 1933 to 1945. It is dedicated to helping leaders and citizens of the world confront hatred, prevent genocide, promote human dignity, and strengthen democracy.
The USHMM’s collections contain more than 12,750 artifacts, 49 million pages of archival documents, 80,000 historical photographs, 200,000 registered survivors, 1,000 hours of archival footage, 84,000 library items, and 9,000 oral history testimonies. It also has teacher fellows in every state in the United States and almost 400 university fellows from 26 countries since 1994.
Researchers at the United States Holocaust Memorial Museum have documented 42,500 ghettos and concentration camps erected by the Nazis throughout German-controlled areas of Europe from 1933 to 1945.
References:The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.