I've bundled these two together because they are essentially the same location, just a small square separating them from each other. The first is the marine pier where Dunross' boat pulls in and ties up.
Back in the late 80's the pier was still just that - a pier - but there has been much development of this area including road construction and now the access to the open water is blocked by a highway called the Avenida Panoramica do Lago Sai Van. In fact the only decent Streetview shot I can get of the pier is taken from this very same highway - it's not completely obvious but the small strip of water where the pier still sits is now completely landlocked.
Across Barra Square is perhaps the second most famous sightseeing spot in Macau - the A-Mah temple. Here it is peeking through the archway of the pier, it's very distinctive with its red-painted walls.