St Stephen's Green is a popular public park in the heart of Dublin, Ireland. Originally a marshy common, it was enclosed in 1664 and later redesigned to its current layout in the 19th century. The park features tree-lined walks, a lake with ducks, a playground, and various statues and memorials. It's a great spot for locals and visitors to relax, take a stroll, or enjoy a sunny day in the city center.