Modular construction, on paper, should vastly speed up the process of construction as well as increase the quality.  Sections or rooms of buildings are pre-assembled in an environmentally controlled room offsite and then shipped to site as needed.  In reality, though, there are many challenges that have kept this type of construction from being more popular.  That doesn’t scare hotel giant, Marriott, though, as they are currently underway on the world’s tallest modular hotel.