I went to Belfast for work and from there I went with locals to do some sightseeing in Northern Ireland. The trip was very economical- I flew with Easyjet from Alicante there is a direct flight to Belfast. The landscapes in the north are amazing although the weather in January is not too good. One day I went to see The Giant's Causeway and I have to admit that it was one of the most impressive natural environments I've ever seen. The basalt columns along the coast were beyond any expectation. If there were a list of the 7 wonders of the world regarding natural environments I have no doubt that this would be one of those wonders beyong being a World Heritage Site.