When NHL teams go on the road, they are often greeted in an unfriendly way by the opposing team's fans. Some arenas are unfriendlier than others, because some buildings don't show much of a reaction at all.
Some buildings like the Wells Fargo Center are infamous for their unruly fans, loud and obnoxious chants and other antics that make an arena a tough place to play in.
Others like the Bell Centre have rich history and passionate fans who eat, sleep and breathe everything Montreal Canadiens, so it is natural to make the building uninviting for opponents.
Here are the NHL's 11 most unfriendly arenas.