Our house is one of the ones on the tour.

http://www.fairfaxcounty.gov/nvswcd/gardentour.htm

The 2015 Watershed Friendly Garden Tour will be held Sunday, June
14 from 1-5 p.m., featuring rain gardens, pervious parking areas,
native plant landscaping, rain barrels, backyard wildlife habitat,
composting and more. Local residents open their gardens and share their
experiences landscaping with natural resources in mind. This year's
tour will feature homes and schools in the greater Tysons area:
Falls Church, Vienna and McLean. Hidden treasures and verdant
landscapes await you!
Please enjoy each garden at your own pace. Visit as many or as few as
you like. Gardens are grouped for ease of viewing. No RSVP is required.