To me, the sukkah is always one of the welcoming signs of fall. A harvest-bedecked tent for the Jewish festival week of Sukkot, you see them set up in backyards, temple parking lots and adjacent to campus cafeterias. This weekend, you can also see them in Union Square Park from dawn on Sept. 19th to dusk on Sept. 20th at Sukkah City. To benefit Housing Works, 12 reimagined sukkah designs will be on display and auctioned off. The finalists were selected by judges that included Ron Arad and Maira Kalman, but the ultimate winner will be chosen by the public, who can vote for People’s Choice Sukkah of New York City on New York Magazine’s site. Its design should stand the test of time, even though the structure itself will only stand for the week.