Fans visiting more than one of this season's four new professional football stadiums are more likely to feel, rather than see, something in common among the structures. Designs range from traditional to contemporary, and roofs range from domed to retractable to nonexistent, but all feature amenities unheard-of in the last generation of NFL venues.
Stadiums are seeing their opening plays this fall in Houston, Seattle, Detroit and Foxborough, Mass. Houston's Reliant Stadium, home of the new Houston Texans, incorporates a translucent, retractable Teflon-fabric roof. The r