The gradual metamorphosis of the town continues as many of the older tourist facilities are replaced with more modern ones. However, some traditional attractions remain firm favourites. The small museum in the North Down Heritage Centre behind Bangor Castle is an example. This is also the venue for the Annual Literary Festival . Pay a visit to the tourist information centre - it resides within the Tower House, built in 1636 as a Custom House. The town offers both modern leisure amenities and ancient historical relics, and much effort is made to keep the town to the fore of the Northern Ireland tourist industry.