The region is known its urban centres and for its natural beauty : Northumberland National Park , the region 's coastline , its section of the Pennines and Weardale . As well as its urban centres of Tyneside , Wearside and Teesside the region is also noted for the richness of its natural beauty . Northumberland National Park , the region 's coastline , its section of the Pennines including Teesdale and Weardale provides evidence for this .