The Lost City lies just a few kilometres north of Lithgow.
It is a series of unusual pagoda structures that resemble an old decaying civilisation swallowed by the wilderness.
Some Pagodas look look like old castles, others like apartment blocks and some even look like houses with thatched roofs.
There is also an old coal mine and two old dams in the valley below the Lost City.
Fire trails lead to the Lost City but require serious 4WDs