it's held every fall at van cortlandt manor. this historic location is not far from where washington irving's legendary headless horseman chased ichabod crane. [ horse whinnies ] [ man screams ] >> we are in the midst of "sleepy hollow" country. this is the home of the american heritage of halloween, and we've always had fantastic halloween events in this area, and this is probably one of the best. >> more than 4,000 pumpkins are clever and spooky scenes. for some displays, artificial pumpkins are needed. but most are real. >> we are in front of our "jurassic park" installation, where we have giant, life-sized dinosaurs that are constructed of, in some cases, more than 100 pumpkins. we sketch them from anatomy books and create them so that they're accurate. each pumpkin represents a specific bone on the dinosaur. >> everywhere you walk, you see imagination at work. >> i think this is definitely one of our most impressive exhibits. this is a huge spider web, 50 foot around, and you've got a mother spider on the web, you've got li