There had been a casino very popular with royalty in this location, but it was demolished after a fire in the 1890s and the present building erected.

Since it opened, the casino has combined roulette and baccarat with dancing and the staging of plays, musicals, and operas.

Not because it stopped being the focal point of summer fun, a situation which, however, took a remarkable turn during the post-war period.

The almost complete closure of their premises, except the theater, which was assigned to art cinema and testing, continued until December 1, 1978, when it was reopened as a gambling casino after the restoration carried out by the architect Ricardo Lorenzo, who kept the neoclassical style with modernist touches.

The Gran Casino sponsors and organizes various cultural and sporting events (Festival Internacional de Santander), photographic contests, sculpture and painting exhibitions, bowling, football, rowing, and other activities.