The Yakushi Pilgrimage covers 49 temples dedicated to Yakushi Nyorai in Western Japan. Yakushi is the Japanese name for the buddha Bhaisajyaguru, or the Healing Buddha, of Mahayana Buddhism.
For those who intend to do the pilgrimage, here is a list of temples.
The basic procedure at each temple is to have your nokyocho inscribed
and stamped at the nokyo (pilgrim's office), which will cost 300
yen. Then find the hall with the Yakushi Nyorai image, toss some money
into the donation box, ring the bell (actually a kind of gong that you
strike with a vertical rope) three times and say a prayer. You may also
light incense or candles.