In honor of World Elephant Day, the Smithsonian National Zoo is hosting a three-day festival, called EleFest, for guests to enjoy family-friendly activities. In honor of World Elephant Day, the zoo is hosting a three-day festival, called EleFest, for guests to enjoy family-friendly activities with special animal demonstrations and keeper talks included. Check back every Thursday for a roundup of Things to do in the DC area. Prince William County FairEnjoy the final weekend of the Prince William County Fair this weekend with the final day on Saturday. Have an event you’d like featured in WTOP’s Things to do in the D.C. area weekly guide?