Shitennoji Temple
Prince Shotoku, the father of Japan’s Buddhism, had this first Japanese Buddhism temple built in 593. In the 8th century, the respect for him has changed into a religion, which is still active to this day. Since the temple was built by Prince Shotoku, it was reestablished as Washu (Japanese religion) in 1949.
The temple grounds are huge. Once you enter, you can really feel the peaceful and solemn atmosphere. You can easily combine this with a half-day trip to Tsutenkaku and Shinsekai nearby.