Weesp (ʋeːsp) is a city, an urban area in the municipality of Amsterdam in the province of North Holland, Netherlands. It had a population of in . It lies on the river Vecht and next to the Amsterdam–Rhine Canal in an area called the Vechtstreek. The former municipality of Weesp merged with Amsterdam on 24 March 2022.
Until the early Middle Ages the region around Weesp was an uninhabited peat bog. Weesp (Wesopa in Latin documents) was granted city rights in 1355 and celebrated its 650th anniversary as a city in 2005.
From the late Middle Ages, the river Vecht was a defensive line for the County of Holland and it remained a military defensive line until the Second World War. Weesp was strongly fortified, more than its size would justify; for most of its history it had a few thousand inhabitants.
The defensive lines consisted of inundation zones, which would be flooded in wartime (the Hollandic Water Line). Behind