Chiayi Tower or 射日塔 is Chiayi City's landmark building. It's located in the north of the city, in the Chiayi park and on the holy soil of the Kagi Shrine. This 62m tall phallic symbol is called Sun Shooting Tower in Chinese and was placed on the exact same spot, where the former main hall of the Kagi Shine has stood. The tower was built in 1998 and features very interesting design elements (source).
My wife decided to go up there and have a look. I concurred. So we went inside, paid a small fee and took the lift. Up there it's quite interesting: Nice view with a coffee... Ooh la!