Holland is a region located in the western part of the Netherlands. It has an area of 5,488 square kilometers and a population of over 6 million people. The main cities are Amsterdam, Rotterdam, and The Hague. Historically, much of the land in Holland was reclaimed from the sea through extensive drainage projects starting in the Middle Ages. Today, Holland remains a prosperous region and economic center of the Netherlands, though it faces some regional tensions due to its cultural dominance over other Dutch provinces.