On the Quinta do Lago estate, Joseph Lee and W. Roquemore designed the San Lorenzo golf course, near the limits of the Ria Formosa Park.

San Lorenzo is different from the other courses at Quinta do Lago, but the quality of its maintenance is as good.

It is a par 72, 6,238 metres in length, and it has some holes of exquisite beauty, mainly those near Ria Formosa, such as the par-3 5th, that provides a glimpse at the Ria as well as two par 4's, 6th and 7th, that hug the edges of the wetlands. According to some of the best players in the country, the par-5 8th is the most difficult hole, because it requires three perfect shots to reach the green.

However, the last two holes follow the philosophy of the architects - as the case of the 8th - and an immense lake is always in play on both of them.

Unfortunately, San Lorenzo has not been so well-known as a championship golf course as it deserves to be, because by its owner choice it has not yet been possible to hold a competition of international prestige there.