USA's prime example of Beaux-Arts architecture was built in 1914. It's the Grand Palais des Champs-Élysées of America if you wish. Back then, it cost $1 million to build the Recreation Pier, which served as a landing point for immigrants arriving in the USA.
After it closed operations in 1937, the landmark building became a socializing platform with a rooftop playground and hosted a maritime radio station.