Sin Sze Si Ya Temple is the temple built by Yap Ah Loy's workers. The information board at the front entrance says "The Sin Sze Si Ya Temple was founded in 1864 by Kapitan Yap Ah Loy, it is dedicated to patron deities of Sin Sze Ya and Si Sze Ya. The deities has guided Kapitan Yap Ah Loy to defeat the enemies and defend Kuala Lumpur during the civil war (1870-1873). The temple has witnessed the birth and growth of our great city Kuala Lumpur."