Extract all of the dates mentioned in this paragraph and list them using bullets in the format {Date} - {Description}

Context: The Stravinsky Fountain was part of a sculptural program, launched by the City of Paris in 1978, to build seven contemporary fountains with sculpture in different squares of the city. This project also included new fountains at the Hotel de Ville and within the gardens of the Palais Royal. They were to be the first public fountains built in Paris since the fountains of the Palais de Chaillot were built for the Paris Exposition of 1937. It was also a major project by the City of Paris to redevelop the area around the old city markets, Les Halles, which had been torn down in 1971, and to re-animate the area with pedestrian streets, squares, and works of art.

Answer: • 1978 - the launch of the sculptural program that included the construction of seven contemporary fountains in Paris
• 1937 - fountains of the Palais de Chaillot were built
• 1971 - the date that Les Halles was torn down