If you're looking for some intellectual stimulation, make a trip to Barbican House Museum. Whether it's history, traditions or cultural practices, you'll find plenty of intriguing displays to keep your mind active here.
You'll be spoiled for sightseeing choice when staying in Lewes. Barbican House Museum is an ideal place to start here, but there are many other worthwhile attractions to consider. University of Sussex, American Express Community Stadium, and Glyndebourne Opera House are close to the collection of historical artifacts and will top off your day nicely.