Washington County Fairgrounds Antique Show & Flea Market Annual antique show, flea market and craft fair at Washington County Fairgrounds. Fri: 7-4 ($10 admission( Sat: 8-5 and Sun: 9-4 ($5 admission). Hundreds of vendors offering a great variety of items. I'll have some great signs, architectural pieces, silverplate, brass and copper, lots of great barn finds!