Centennial Park is a public park that adds a useful stop to the Ellicott City things-to-do map. Large Ellicott City lake park with trails, boating, and picnic lawns. It is worth listing for travellers because it gives the destination a more specific texture than another general viewpoint or shopping street.
Plan it as a focused visit rather than a whole-day anchor unless you already know this is your special interest. Check the official site before going for current opening hours, tickets, and seasonal closures, then pair it with nearby sights in Ellicott City so the detour makes sense on foot, by transit, or by taxi.