Round Towers were built in Ireland between the 9th and 12th centuries. Check wiki link below for more info. This example is off the main road between Straffan and Maynooth in County Kildare. I just found out it's actually called Taghadoe Round Tower. I don't know how old the church is, but I'd guess 18th/19th century. If I'd had any sense I would have checked the dates on the gravestones. General Round Tower info: en.wikipedia.org/wiki/Irish_round_tower Photos of this tower (without the snow): www.roundtowers.org/taghadoe/index.html