Marina Bay is the area around the estuary of the Singapore river. This area has experienced significant development since the 1970s, when the first land reclamation activities started. In 2008 the Marina Barrage was built, turning Marina Bay into a freshwater reservoir. Several new buildings and skyscrapers have been built and are still being built along Marina Bay: the Esplanade theatre, the Marina Bay Sands casino and resort and the Sands expo and convention centre, the Float at Marina Bay floating theatre stage, the DNA helix pedestrian bridge and more.