The fourth and last completed reclamation of the Zuiderzee Works is Southern Flevoland in the province of Flevoland. This polder was constructed between 1959 and 1968 and has a size of 430 km². Around the polder are the lakes Wolderwijd, Nuldernauw, Nijkerkernauw, Eemmeer, Gooimeer, IJmeer and Markermeer . The polder is surrounded by the Knardijk. In the polder are the city of Almere , the village of Zeewolde and the hamlet of Harderhaven. The Flevolijn and the Hanzelijn and the motorways A6 and A27 run through Southern Flevoland. We also find the Oostvaardersplassen nature reserve.