Chillin’ With My Peeps Halloween party Come dressed in costume for a party by the carousel. The first 150 kids age 12 and younger will receive a trick-or-treat bag that can be taken to the Peeps and Co. store for candy. 3-7 p.m. National Harbor, 150 National Plaza, National Harbor. 877-628-5427. www.nationalharbor.com. $3.
“Nightmare on Fleet Street” Public House hosts this adult Halloween party including a DJ, costume contest and open bar 10 p.m.-midnight. For age 21 and older. 10 p.m. Public House National Harbor, 199 Fleet St., National Harbor. 240-493-6120.
Riseband & Show The nine-member R&B/funk/jazz/Motown band performs. Must be age 21 or older. Friday-Saturday 9 p.m.-1 a.m. Miss Motley’s Cafe, 9501 Crain Hwy., Bel Alton. 301-539-7900. www.belaltonalumnicdc.org. $12.
Early 20th-Century Holiday Postcard Exhibit A showcase of hundreds of holiday postcards, including rare Halloween cards from the 1900s. Friday-Sunday noon-4 p.m., through Jan. 3. Marietta House Museum, 5626 Bell Station Rd., Glenn Dale. 301-464-5291. history.pgparks.com. $3, seniors $2, ages 5-18 $1, age 4 and younger free.
Needleart 2013 “A Trip Down Memory Lane” is the theme of the 18th annual exhibit sponsored by Stitching Pretty of Laurel. Opening reception Friday 3-7 p.m., exhibit runs through Dec. 1. Montpelier Mansion, 9650 Muirkirk Rd., Laurel. 301-377-7817. arts.pgparks.com. Reception free. Exhibition $6, seniors $5, youth $3.
Annapolis by Candlelight A tour of historic and private homes on Duke of Gloucester, Market, Charles, St. Mary’s and Conduit streets, and Acton Place. Friday-Saturday 5-9 p.m. Historic Annapolis, Maryland Avenue and State Circle, Annapolis. www.annapolis.org. $35, registration required.
Cavalia’s Odysseo A theatrical equestrian arts show features 63 horses and 47 artists. Friday at 8 p.m., Saturday at 2 and 8 p.m. Closes Sunday at 2 p.m. Plateau at National Harbor, 201 Harborview Ave., National Harbor. 866-999-8111. www.cavalia.net. $22.25-$129.75.
David Dorfman Dance A Performance of “Come, and Back Again,” an exploration of vulnerability, mortality and virtuosity set to the music of the Atlanta band Smoke. Friday-Saturday at 8 p.m. Clarice Smith Performing Arts Center, Kay Theatre, University of Maryland, Route 193 and Stadium Drive, College Park. 301-405-2787. www.claricesmithcenter.umd.edu. $35, seniors and alumni $30, staff $28, students and youth $10.
Jug Bay Run for Wildlife Participate in a 10K or 5K run or a 3K walk to support projects, research and education in the Patuxent River watershed. Registration 7:30 a.m., races begins at 9 a.m. Patuxent River Park, 16000 Croom Airport Rd., Upper Marlboro. 301-627-6074. www.pgparks.com. 10K runners $22, 5K $20, 3K walkers $17. Registration required.