Must-Do List Offbeat NOVA Think you know Fairfax County? Think again! Check out these quirky spots you won’t want to miss! FOAMHENGE This full-size replica of the original Stonehenge at Cox Farms Fall Festival is made entirely from Styrofoam. And it’s awesome. WASHINGTON & OLD DOMINION TRAIL This 45-mile-long trail spans three counties along a former railroad bed. It’s also the “skinniest park in Virginia.” MATILDAVILLE RUINS AT GREAT FALLS PARK Walk amongst the stone ruins of this ghost town established to build the Patowmack Canal. BEEHIVE KILN This circa-1800s brick kiln at Occoquan Park was used by prisoners to make bricks for the Workhouse reformatory (now the Workhouse Arts Center). FXVA.COM • 17 SMITHSONIAN’S NATIONAL AIR AND SPACE MUSEUM STEVEN F. UDVAR-HAZY CENTER (@AV8RKATE) MOUNT VERNON (APRIL GREER)