Dungannon Castle is a historic site located in Dungannon, Northern Ireland. Originally built in the 17th century, it served as a stronghold for the O'Neill dynasty, a prominent family in Irish history. The castle was strategically positioned on a hill, providing a commanding view of the surrounding landscape. Today, the remains of Dungannon Castle are part of a public park, allowing visitors to explore the area and learn about its rich history. The site features interpretive signs that detail its significance and the role it played in the region's past, making it a valuable educational resource.