1) Monastery 
Carthusian monastic building
• (n.) A well known public school and charitable foundation in the building once used as a Carthusian monastery (Chartreuse) in London.
a well-known school and charitable foundation that is now in Godalming, Surrey, Eng. The name Charterhouse is a corruption of the French Chartreuse ...
Char'ter·house` noun A well known public school and charitable foundation in the building once used as a Carthusian monastery ( Chartreuse ) in London. 
Charterhouse is a celebrated school and charitable foundation in the city of London. It was built in 1371 as a priory for Carthusian monks by Sir Walter Manny. After the dissolution of the monasteries it passed through several hands until it came to Thomas Sutton who converted it into a hospital and school. In 1872 it was moved to Godalming and the...
noun a Carthusian monastery