See what's happening in Fairfax County and beyond this weekend:
Riverbend Park is hosting an Astronomy Festival on Saturday. The event is at 5:30 p.m. at the park on 8700 Potomac Hills St. in Great Falls. Visitors will use the Schmidt-Cassegrain telescope to view the stars. Admission is $5.
This weekend is the last chance to check out the 100 Under 200 exhibit at the Workhouse Arts Center. One hundred artists are exhibiting artwork priced under $200. The exhibit ends Sunday. The museum is at 9601 Ox Road in Lorton.
You can also check out the Welcome to the Speakeasy event at the arts center at 8 p.m. Friday and Saturday. Tickets are available online.
Interested in volunteering this year? The American Legion Post 180 is hosting a volunteer information session with representatives from local nonprofits. The event is from 8 a.m. to 11 a.m. Saturday at the post on 330 Center St. N. in Vienna. Find out more information.
Check out discounted wedding gowns at the Brides Against Breast Cancer Charity Wedding Gown Sale and Bridal Show at 10 a.m. Saturday at the Hyatt Arlington on 1325 Wilson Blvd. in Arlington. Gowns range from $99 to $3,900.