Bondgate Tower. Part of the main defence wall of Alnwick Town, built under licence from Edward IV and completed in 1480 by the 4th Earl of Northumberland, the grandson of Hotspur, by whose name this tower is also known. , Alnwick Colour: This plaque is purple, white and green glass claret orange purple clear bronze grey stone red slate wood blue brass multicoloured pink black marble brushed metal green maroon film cell green and red Belgian Blue Stone red and black yellow terracotta brown silver white gold Wikimedia: Flickr: [geolocate this address]