Harvard Stadium

Harvard Stadium is a U-shaped college football stadium in the northeast United States, located in the Allston neighborhood of Boston, Massachusetts. The stadium is owned and operated by Harvard University and is home to the Harvard Crimson football program. In its current form, Harvard Stadium seats just over 25,000 spectators.

Built in 1903, it was a pioneering execution of reinforced concrete in the construction of large structures. Because of its early importance in these areas, and its influence on the design of later stadiums, it was designated a National Historic Landmark in 1987. The stadium is the nation's oldest permanent concrete structure dedicated to intercollegiate athletics.

Source: Wikipedia