Dumbarton House (2715 Q St NW) is hosting its 8th annual summer Sunday Serenity Yoga series, with a 60-minute class this Sunday, June 12 at 10 am. Enjoy their serene outdoor space during this all-levels class that’s designed to be fun and challenging for both experienced yogis and yoga skeptics alike. Bring your own mat and a $5 suggested donation. Reservations aren’t required, but are suggested. Weekly classes run through August 28.