Philip de Lange House
The Philip de Lange House, built in association with a nitrary in the 1750s, is the Rococo-style former home of Dutch-Danish architect and master builder Philip de Lange at Prinsessegade 54 in the Christianshavn neighborhood of Copenhagen, Denmark. It was from 1877 to 1864 part of the Royal Porcelain Manufactory's Christianshavn factory and is now hidden from the street by a school building from 1865. The house was listed on the Danish registry of protected buildings and places in 1932. It is now part of Christianshavn School and houses the school's after school programmes. History Philip de Lange's house and nitrary Philip de Lange purchased a large site at Prinsessegade in 1755 and was at the same time granted a royal license to establish a nitrary in the grounds. A house for his own use was completed on the property later that same year. His second son, Philip Lange, who would himself become a prominent architect and master builder, was born the following year. Niter was together with charcoal and sulphor from Iceland (then part of Denmark) the main ingredients in the manufacture of gunpowder. The niter was extracted from enriched soil in shallow, rectangular niter beds which was fed