A tranquil and mysterious underground water palace Guanyinshan Reservoir is a designated historic site and part of the Museum of Drinking Water. It is a reservoir with a history of over a hundred years. After its construction, it significantly contributed to improving the life expectancy of the residents at that time and stands as a remarkable achievement in public infrastructure. This facility has been closed to the public since the completion of the new water purification plant in 1977, but the history of this facility is worth telling through professional guided tours. Since its reopening to the public in 2019, it has become a new hidden gem to explore in Taipei City. Its architectural features have earned it the nickname "Underground Water Palace." The scenic trails illuminated by lights create a runway-like setting, making it a perfect spot for Instagram-worthy photos. Don't miss the chance to visit and capture the beautiful scenes!