well there's always the Mother Shipton's Cave Theme Park and Tea Shoppe* but that's in Yorkshire.
http://www.mothershiptonscave.com/the_petrifying_well.htm
No doubt there's shedloads of other less touristified sites though.
*I'm probably being unfair. I've not even been. I was just a bit disappointed by the state of Cheddar Gorge's attendant tourist tat the other day.