WARWICK -- The former main office building at the old Rocky Point amusement park burned to the ground this morning, a spectacular fire that sent large plumes of smoke high into the air that were visible for miles.

The building, known as the Cliff House, was unoccupied, according to the Warwick Fire Department, which has about 25 firefighters at the two-alarm blaze. No injuries have been reported.

Shortly after 1 p.m., a pale-gray plume of smoke still towered above Narragansett Bay, and flames were burning at the scene. Firefighters successfully kept the large fire from spreading.

The wood-frame two-and-one-half-story building, located on a hill, is one of about 25 vacant structures -- most spray-painted and vandalized -- in the area.

The 124-acre park is slated for redevelopment, though the owner, the federal Small Business Administration, is still in negotiations regarding the size of the condominium development.

In September 2004, a suspicious fire destroyed The Big House at the park. The building had housed the cooks and other staff members when the park was operating.

The park opened in 1847, and for more than 100 years was one of America's greatest and most famous amusement parks. It was nearly destroyed in the hurricane of 1938, but the park was rebuilt with new rides and enjoyed a renaissance.

The park closed in 1995.