Fenway Park in Boston, Massachusetts is arguably the most famous edifice of professional sports in the world. It has been in continuous use as the home of the Boston Red Sox since it opened in 1912 making it the oldest operational MLB stadium. Fans recently got the peace of mind that it will continue to stand when it was added to the National Register of Historic Places in March of 2012.
Partly thanks to its surprisingly low capacity, under 40,000, and mostly because it is such an icon of sport and home to such a beloved team, this stadium has been full for every home game of the Red Sox since May of 2003.
There are many other sport, entertainment, and community events held here as well. Baseball of all levels has been played on its grass, still real Kentucky Blue Grass, as well as soccer, football, and even hockey. Major concerts, political rallies, conventions, and fairs have been held as well, making it a community monument of all stripes.