In 1972, the architecturally imposing former Boston City Hall building in the heart of downtown gained a new lease on life as the home of Lucien Robert’s landmark French restaurant, Maison Robert. In the space that once housed the office of the city treasurer, Maison Robert has flourished ever since. The distinctly American setting even retains a statue of Ben Franklin in the courtyard, but the menu here is distinctly French, managing to be both classically and creatively inspired. So, expect European-style splendor and service, with presentation that aims to wow. Chef Ken Duckworth now heads up the kitchen.