Since 2003, the Seattle Seahawks have outscored opponents by 430 points at CenturyLink Field. On the road, they have been outscored by 361. That differential (791 points) is the league's second-biggest gap, after the Baltimore Ravens.

Owner Paul Allen grew up as a fan of the University of Washington and wanted to recreate the atmosphere of Husky Stadium in an NFL facility.

"Paul has such fond memories of Husky Stadium," said architect Joe Niemuth, design director in charge of sports for AECOM, which has designed many professional sports venues. "Washington's opens up to Union Bay. We came up with a concept in a week -- a front door that opens up into the city. We had a big vertical scoreboard and some funky end zone seating."