The Sembawang God of Wealth Temple in Northern Singapore is said to have the largest statue of Cai Shen in the world standing on its roof. The statue is 28 feet high and weighs 4 metric tons (8818.4 pounds). Preparations for the temple began in May of 1998 and construction began in June of 2004 (and has already been completed).
Now, impressive statues are not the most important aspect of religion. They are kinda cool to know about, though.