Moni Mega Spileo is a 3km walk up from Zahlorou. The original monastery was destroyed in 1943 when Nazis executed all the monks. The new monastery's most prized relic is the miraculous icon of the Virgin Mary, said to have been painted by St Luke. It was supposedly discovered in the nearby cavern by St Theodore and St Simeon in AD 362, but most likely dates back to around AD 1000. Popular with pilgrims; strict dress code applies.
Call ahead outside of summer.