[reverend]

In a SP game, I searched a province with my pretender (4W 5S) and a mage (1A 1W 2N). Next turn, I get the message telling me that they found two sites EACH. So I click on the province, and lo and behold, there are four sites: Farm of Plenty, Whispering Woods, and TWO Crystal Gardens.

Now, I haven't yet checked if I get income for two gardens, but shouldn't magical sites be unique in a province?