An outdoor stadium has been estimated to cost at least $700 million, with a permanent or retractable roof likely to add another few hundred million dollars to the total price. But a roof could ...

So the Vikings entered a new era of transparency: The $1.076 billion US Bank Stadium will open next season, boasting the only ETFE roof on a sports facility in the United States.

Ramsey County would use a half-cent sales tax to raise $350 million for the retractable-roof stadium, which would be built on an abandoned munitions plant about 15 minutes north of St. Paul and ...