Knowth is a prehistoric site located in County Meath, Ireland, known for its impressive passage tombs. It is part of the Brú na Bóinne UNESCO World Heritage Site and dates back to around 3200 BC, making it older than the Great Pyramid of Giza. The site features a large circular mound surrounded by 18 smaller satellite tombs. The main tomb at Knowth is notable for its intricate stone carvings, which depict various symbols and patterns. These carvings provide insight into the beliefs and practices of the ancient people who built the site. Visitors can explore the tombs and learn about the rich history of this significant archaeological location.