Joseph Moir's Shot Tower: Taroona. As you head south from Hobart on Channel Highway you pass the shot tower on a winding road up Tolman's Hill.
It is one of Tasmania's most historical industrial buildings and has National Trust classification A.
It is 58 metres tall, and it can be climbed. There are 318 steps, but there are great views of the Derwent from the top.
It was completed in 1870 and was Australia's tallest building for four years. It was Tasmania's tallest structure for over 100 years, until superceded by the 61m ABC tower in Hobart. Which is where we hang our Microwave network for the University :-)