Senso-ji Temple, known locally as Asakusa Kannon, is a temple dedicated to this tiny figure of Kannon pulled in by two fisherman.
It's pagoda, main temple, and several smaller temples are quite popular among visitors and locals. Also spectacular are the small gardens and the long entrance way lined with shops and stalls selling food.
Visit in the morning or the evening, when the crowds are smaller and you have more opportunities for peaceful reflection.
The Taito Ryokan is in this neighborhood, so I visited Senso-ji three or four times, at differing times of the day. Each time, I got a different impression of this fascinating complex.
Don't miss the lovely series of watercolors near the entrance that tell the story of Senso-ji and the fishermen.