Tai Tam Reservoir is a large water reservoir located in the eastern part of Hong Kong. It was constructed in the late 19th century to supply fresh water to the growing population of the area. The reservoir is surrounded by lush greenery and offers scenic views, making it a popular spot for nature lovers and hikers. The reservoir is part of the Tai Tam Country Park, which features various walking trails and picnic areas. It plays a crucial role in the local water supply system, helping to ensure that residents have access to clean water.