The telescopes chosen for this list are largely based on how they look, from a design perspective, rather than their scientific importance. Their unusual requirements create interesting structural engineering approaches. However, the Holmdel Horn Antenna is possibly the most interesting from both points of view, its highly unusual shape is like a gigantic ear trumpet sticking out of a garden shed, but it also happens to be the device which discovered the cosmic microwave background radiation – the echo of the big bang. I’ve included a view beneath the mesh of the gigantic Arecibo dish, just because I always wondered what that space was like. For the rest I’ve chosen ones which best display the spiky, high tech look of giant scaffolds and space frames or which are attached in impossibly top heavy ways ancillary buildings, like the giant upturned umbrella of the Parkes telescope.