Being close to the border between the north and the south, Co. Londonderry itself and the city of Derry is a perfect place to base yourself before or after your journey along the World famous Causeway Coastal Route. Whenever visiting the region myself, I'll always start in Belfast and work my way along the coast to Derry, but whichever way round you choose, this county along with its great bastion city of Derry doesn't disappoint and will always offer a warm welcome. I'm not going to get bogged down on all the politics and troubles of Derry's past, as the region is all about tourism not terrorism nowadays. From heritage centres to great cathedrals, from Tapas to Ulster fry's, this county has all you'll need to get to grips on how cultures have intertwined over the decades and one thing's for sure, it won't be long before your learning the odd Gaelic word or two.
I mentioned a second ago, that the county itself intertwines very closely with the south, in fact from the City of Derry itself, the border is only a short few miles away and so, even if you don't have the correct currency, most businesses accept both, but if you really want to be sure, there are a number of currency exchanges at all border towns and villages, all offering quite competitive rates. If you are looking at visiting the historic sites of the county, I think the best piece of advice I can give you, is to visit those attractions on both sides of the spectrum. Both have a different story to tell, but all are done in a balanced way and by doing so, it helps you learn on a deeper level, just exactly what journey the people of this county have been on.