Timelapse Video of the Rio Olympics Construction

ABC News, San Francisco is the source of a one-minute timelapse video of Olympic construction.  Although short and sweet, it gives a quick sense of what kind of facilities are needed to pull off the event.  Specifically, the video shows the construction of the Olympic park, which hosts many of the indoor activities, gymnastics, tennis, two aquatics facilities and track cycling (velodrome); the Olympic village for housing the athletes; a shooting center, the Macarana stadium for track & field activities and soccer; and a golf course.