Knossos was an elaborate palace built around 7,000 BC on the island of Crete by the Minoan civilization. It was designed by Dedalos and covered around 5.5 acres, containing over 1,400 rooms decorated with frescoes. The palace had advanced plumbing systems for water supply, drainage, and waste removal. It also served as an important trade hub, exchanging goods with areas across the Mediterranean. Knossos was eventually destroyed by earthquakes and fire around 1700 BC but excavations and reconstruction beginning in the late 1800s by British archaeologist Sir Arthur Evans have revealed insights into Minoan civilization.