A recently-opened hockey arena in Slovakia actually got another opening! Watch as its roof collapses from the weight of snow and ice on top of the structure. Luckily, players who were practicing just before the implosion were able to escape without injuries.

In December of 2010, a game between the Minnesota Vikings and the New York Giants was relocated to Detroit's Ford Field, when the roof of the Minneapolis Metrodome collapsed under the weight of snow and ice.