 The first building for Virginia Techs 1 billion computer science-focused campus in Alexandria will be shaped like a gem but look like crown, according to new renderings released Tuesday. Virginia Tech revealed the latest design by architectural firm SmithGroup, which shows the 300,000-square-foot academic building with gold-colored fins running vertically. The building, expected to be finished in early 2024 and cost 275 million to construct, is the first of three structures on 4 acres Virginia Tech intends to erect in the north section of what developers are calling the innovation district. 