A couple of weeks ago, someone I know and yours truly visited Longwood Gardens, a botanical garden in a former DuPont estate located just outside Philadelphia. It was a bargain at $16.00--better than Disneyland. Clearly, Pierre S. DuPont succeeded in creating his own private Chicago World's Fair. The crowd was multi-national and multi-cultural, with lots of Asians, South Asians, and Russians promenading among the ferns and fountains. The giant greenhouse (4.5 acres under glass) featured a Fall vegetable festival, as shown in the picture and described in the official blog.
Not to be missed: the lotus gardens, the lake, the DuPont house, the former Casino, and the gigantic Aeolian organ. "Autumn's Colors" themed displays on show now... Plus, fireworks and fountain special displays at various times during the year. More visitor information, here.