During Heian Period, 8th to 12th century, Buddhism became very popular in Japan. Because this temple was established by Prince Shotoku who brought Buddhism to Japan, Shitennoji becomes the center of Japanese Buddhism.
For many years, most of the old buildings have been lost, but the structure, the positions of the buildings, is the same as the original. Especially, the central Garan, is the same and you can see how was the Buddhism temple in the ancient period of Japan.
Today, it is still one of the most popular temples in Japan and many people visit here for any events.