The United States Lighthouse Service base at La Puntilla, San Juan, Puerto Rico. The photographer is looking south-south-west from a tall building on the south shore of San Juan showing the waterfront of the Lighthouse Service base and alongside the end of the quay on the left is a buoy tender, possibly the Acacia (1920) or the Spruce (1920). The main building of the base is on the right and in the right foreground is a building plastered with advertisements. There are a projecting sign for Coca Cola, a poster for Chesterfield cigarettes, a poster for De Soto Six motor cars and on the roof is a painted sign reading 'Para Exterior, Use S.W.P.'. A Popular class passenger launch is in the centre foreground.