From The Athletic:Ranking all NFL stadiums.

SigFreudianSlip said

Habs are my favorite hockey team, hope to get up there someday. I’ve been to San Diego, Tennessee (many times home team) Astros, Oilers, Texas, Vandy, UNLV, Preds, all better room than the dome.

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Lambeau, Tottenham Hotspur stadium, the Astrodome, Yulman Stadium, the Georgia Dome, and Fulton County are the other pro or college football hosting venues I'd been to. Granted, my knees were in better shape when I went to Georgia Dome, Astrodome, and Fulton County, but I remember them having better leg room.

Baseball-only stadiums, I've been to Fenway, Wrigley, Coors, Seattle, San Fran, Pittsburgh, Camden Yards, Kansas City, both Yankee Stadiums, CitiField, Milwaukee. I've also seen soccer games at Arsenal and West Ham's stadiums. All better legroom than the dome.