Chattanooga, Tennessee, United States--Chattanooga, Tenn.–based architectural fabricator Branch Technology have build a giant 3D-printed structure for Nashville, Tenn.'s LEED ND–targeted OneC1TY neighborhood; made of carbon fiber–reinforced Acrylonitrile Butadiene Styrene, the 20-foot-tall, 42-foot-wide structure set the world record for being the World's Largest 3D-Printed Structure, according to the WORLD RECORD ACADEMY.