Enjoy cannon fire and other living history demonstrations at the Battle of Blandesburg: A Bicentennial Celebration event. (Jabin Botsford/For The Washington Post)

• At National Harbor, 20 teams will set sail on the Potomac River and race in dragon boats regatta-style. After watching from one of the piers or the waterfront plaza, spectators can shop the farmers and craft markets or stick around for street performers and a performance by the Chesapeake Orchestra.

• Though the Battle of Bladensburg itself happened in 1814, the city is hosting a bicentennial celebration with the opening of a visitors center at the site of the War of 1812 conflict, living history demonstrations, guided boat tours, period music and games. It should be a fun afternoon for families and history buffs alike.

• As the summer winds down, the calendar loads up with festivals. This weekend, we have you barbecue lovers, wine aficionados and craft beer connoisseurs covered. In Arlington, the Twisted Vine is hosting a tasting in its rear parking lot and pairing glasses of wine with barbecue and sides from the Backyard Barbecue and Catering Company. At Blob’s Park in Jessup, the Kegs and Corks Fest has German music and food, crabs, oysters and plenty of offerings from local breweries and wineries.