As the story goes, someone long ago left a sick tiger cub with these monks out in Kachanaburi or Tak somewhere in the west end of Thailand, near Burma. Then the whole thing got out of control. More people brought more tigers; the tigers did what came naturally. They've got like thirty tigers now. The temple is near the River Kwai, what Farang call the River Kwai, the real name of the river is different, it escapes me right now, maybe the Mae Klong. (Kwai means "side channel")
I'll leave it to you to look up the whole story. I read it on Huffington Post, I'm sure googling "tiger monk thailand" would do it. There's lots more pictures.