That's easy! 103. My husband gave me a huge wall map of the US and we pin point each lighthouse we have seen. I just came back from Florida where I was able to see 10 in 2.5 days. I, too, enjoy meeting LH fans on these trips. On our way to Cape Lookout last year we met a couple that had seen over 250. WOW!!! This Spring and Fall we plan on going to Cape Cod and Maine for more lighthousing. Great fun!!