Castlewellan has a wide main street which runs through two main squares lined with chestnut trees. The town was designed by a French architect for the Annesley family (at that time owners of what is now Castlewellan Forest Park) and is unique within Ireland due to its tree lined squares both in the old town (upper square) and new town (lower square) as well as its very wide main street. The old market house in the upper square was built in 1764 and now houses the public library.[1] the town contains many buildings of interest including St. Pauls Church of Ireland church, St. Malachys RC church, the Grange Courtyard and Castlewellan Castle.