There’s nothing subtle about the Wang Saen Suk Monastery garden, 90 minutes drive south of Bangkok, apart from its location, hidden down a quiet lane not far from the coastal resort of Bang Saen. At the entrance, a brightly coloured sign proclaims “Welcome To Hell”, while beyond lies a garish, in-your-face morality tale of sawn torsos, boiling vats and devilish figures tormenting worldly sinners.