The Dutch River Sight is a term that refers to a DIKE, which is a structure built to protect land from flooding. A DIKE is typically made of earth or stone and is usually built along the banks of a river. The purpose of a DIKE is to prevent flooding by providing a barrier between the river and the land. Dikes are an important part of Dutch culture and have been used for centuries to protect the country's low-lying areas from flooding.