Google has shared the latest renderings for its futuristic, canopied campus in Mountain View’s North Bayshore neighborhood. Called Google Charleston East, the 595,000-square-foot office building would be Google’s first ground-up project. The 18.6-acre site would include walking trails, a public park and plaza and ground-floor retail. Google paid $215.2 million to LinkedIn last year in a blockbuster Silicon Valley land swap.