Johannes Servaas Lotsy was a Dutch politician. From 1852 to 1856 he was mayor of Dordrecht.
J.S. Lotsy
Lotsy (center) during his Leiden student time (1830)
Willemsoord is a large former naval base of the Royal Netherlands Navy in Den Helder. It is now connected to the city center of Den Helder, and focuses on entertainment and tourism.
Monumental buildings at Willemsoord
The dams and the Nieuwe Werk of 1792
Design for housing on the Nieuwe Werk
The Nieuwediep with the Battery and the Nieuwe Werk in 1810.