sphinx: one of a number of large stone statues with the body of a lion and the head of a man that were built by the ancient Egyptians
statue: a sculpture representing a human or animal
millennium: (New Testament) in Revelations it is foretold that those faithful to Jesus will reign with Jesus over the earth for a thousand years; the meaning of these words have been much debated; some denominations (e.g. Jehovah's Witnesses) expect it to be a thousand years of justice and peace and happiness