The MIT Sailing Pavilion is home to George Owen's Tech Dinghy, in which thousands of MIT students learned to sail. The Sailing Pavilion, the first facility constructed for college sailing, was built in 1935. It is now known as the birthplace of today's collegiate sailing. A number of colleges had sailing clubs in the late 1800s; however, these were primarily social clubs consisting of private boat owners. The first ten Dinghy Championships of the Intercollegiate Yacht Racing Association were sailed on the Charles River in MIT's fleet of cat-rigged, wooden Tech Dinghies. To this day, MIT continues to host more college regattas than any other site in the country.