Ninna-ji Temple
The head temple of the Omuro school of the Shingon sect of Buddhism, registered as a UNESCO World Heritage Site as one of the "Historic Monuments of Ancient Kyoto" The construction of the temple began in the early Heian period (886) at the request of Emperor Koko, the 58th emperor, and was completed in 888 by Emperor Uda, the next emperor. The temple name, Ninna, comes from the Japanese era name.
You need a ticket to enter the imperial garden. Every part of the garden has its own unique scenery—definitely worth checking out.