We've featured architectural photographer Mike Butler before, when he shot the Intercontinental Hotel in Miami, FL. This time, Mike heads to Bogota, Colombia, to shoot the Virgilio Barco Library using a slew of hot lights and assistants. If you've ever wondered why it takes 8 hours to create a single architectural image, this BTS will show you exactly why. This video shows a number of awesome things: from the way he orchestrates his shoots and lights structures, to the problem solving he had to employ to overcome a few unforeseen weather issues while on location. Check out the clever use of headsets to direct his assistants and deal with lighting problems on the fly, as well.