ULOG: Lloyd's Building, London

This futuristic building looks like it belongs in a sci-fi movie rather than Lime Street in London. The award-winning Lloyd's building (also known as the Inside-Out building) is an iconic architectural landmark and one of the most recognisable constructions on the London skyline.

Architects Roger Stirk Harbour + Partners were behind the innovative design, which has its services – including water pipes and staircases – on the outside. Built between 1978 and 1986, the building also features 12 exterior lifts, which were the first of their kind in the UK.