The abandoned water park of Ho Thuy Tien is located in the lake near Thien An Hill about 8 km from the tourist area of central Hue. It has gained a bit of fame on the internet lately and has become a destination for lovers of abandoned things. Recently there's even a local posted at the gate who demands money from anyone wanting to take a look, but apparently there's other ways in too.
Not much is known about the park other than it opened in 2004 as a family water park and cost about 3 Mill USD to build. It closed not too long afterwards and everything left as it was, even live crocodiles (who were recently rescued by PETA).