This excursion guide describes the Zuyder Zee project which dammed and partially drained a low coastal area of the northern Netherlands. The guide also provides itineraries and other practical information for visitors to the area. It is one of a series of publications developed by the Information and Documentation Center for the Geography of the Netherlands (IDG), a nonprofit organization whose aim is to supply information and documentation about the geography of the Netherlands to institutions and bodies outside the country. There are three sections. Section one contains a history of the area and provides a summary of the Zuyder Zee project describing its origin and execution. The significance of the reclamation activities for the Netherlands is discussed. The second section of the guide presents and describes excursion routes. The appendices, which comprise the third section of the guide, describe archaeological finds in the area, present demographic statistics, explain topographical names, discuss modes of transportation and accommodations, and list recommended readings and maps. (RM)