Last week, Prospect Height’s became the city’s newest landmark district. At 850-odd buildings, it is the largest district to be created since the Upper West Side Historic District was created in 1990. Clearly, a lot of work went into the three-year effort championed by locals and the Municipal Art Society and driven largely by the nearby Atlantic Yards project and the undue development it spurred on one of Brooklyn’s last unprotected brownstone neighborhoods. To highlight just how hard it is, but also what a triumph, MAS put together this thoughtful little video. Hopefully it will inspire you to do something civic minded as well on this patriotic weekend or beyond.