We never really noticed passing into Northern Ireland. Possibly, there was a small sign somewhere, but if so, it completely escaped our attention. I started noticing slight differences in the signposting and the license plates, and that was that. We made a brief stop in Enniskillen, but the "castle" we were going to look at was extremely disappointing from the outside, and traffic & parking was a nightmare. So, we pressed on towards our intended destination for the day; Giant's Causeway. However, just outside Omagh, we spotted a sign for something called the Ulster American Folk Park, and since we're both huge fans of the US, we decided to check it out. Well, it turned out to be the clear highlight of the trip. We spent several hours walking around in the rain, looking at tons of old stuff and reconstructed buildings, talking to craftsmen and volunteers who'd given up time and resources to come talk to tourists like ourselves about things they were passionate ...