When Nationwide Children's opens the crown jewel of its $786 million campus expansion next week—a 293-bed inpatient hospital—it hopes to raise its standing among its pediatric peers. The overall campus expansion, billed as the nation’s biggest ever in terms of square footage, came in $54 million under budget, thanks in part to lower construction costs during the recession, hospital officials said. The 12-story hospital cost $450 million to build, $30 million under budget. The project was kept under budget despite $79 million in added projects.