Connecticut. The Lime Rock Season Opener and Trans-Am & Royals Car Show is May 25-27, 60 White Hollow Rd., Lakeville. From 10 a.m. to 4 p.m. May 27 is the Royals Car Show with muscle cars, tuners, rods, and antiques; spectator admission is $5. Information: www.limerock.com/index.php.
Delaware. Somerville Manning Gallery, 101 Stone Block Row, Greenville, presents "American Masters," a collection of works by outstanding artists from the 19th and 20th centuries. Through June 2. 10 a.m.-5 p.m. Tuesdays-Saturdays. : 302-652-0271; somervillemanning.com.
Maryland. The Green Spring Valley Garden Club celebrates its centennial May 15-16 with " Her Story … Our Story: 1912-2012, A Garden Club of America Flower Show," featuring floral design, horticulture specimens, photography, botanical art, and conservation exhibits at the Maryland Historical Society Museum, 201 W Monument St., Baltimore. 2 to 4 p.m. May 15 and 10 a.m.-5 p.m. May 16. 410-685-3750; www.gsvgc.org.
Massachusetts. Herb Festival in East Sandwich runs 10 a.m.-4 p.m. May 18-20 at Green Briar Nature Center and Jam Kitchen, 6 Discovery Hill Rd. Admission is free to the festival, which features an extensive plant sale of herbs, perennials, wildflowers, everlastings, annuals, and vegetables plus special programs. 508-888-6870; www.thorntonburgess.org/HerbFestival.htm
New Hampshire. Breathe NH's 27th Annual Seacoast Bike Tour, in Portsmouth, runs May 19-20. It does not matter whether you are a pro or beginner, cyclists are encouraged to join this fun event. The tour provides scenic views all the way from Portsmouth to Ogunquit, Maine. 800-835-8647; www.breathenh.org/BikeTour
New Jersey. Cape May Forum re-creates the famous 1905 automobile races on the beaches of Cape May between Henry Ford and Louis Chevrolet. The 2012 races, like the original, celebrate advances in automobile technology and energy efficiency. East Lynne Theater Company performers will be re-creating the event from 10 a.m. to 3 p.m. May 19. Races begin at 1 p.m. in front of Convention Hall. A prerace exhibition of cars will be in Rotary Park starting at 10 a.m. Free. 609-425-1325; www.capemayforum.org.
New York. The Montauk Music Festival is May 17-20 on Long Island. Festival events take place in different venues, including the Montauk Green. Hear a variety of bands from all over the country. 631-668-5077; www.themontaukmusicfestival.com.
Pennsylvania. The National Road Festival is known as the "world's longest festival" because celebrations continue along 300 miles of the Historic National Road — Route 40. In Pa., a wagon train will make its way from town to town just as the pioneers did in the early 1800s on their way west. Music, arts and crafts, and ethnic food. Washington County events: 866-927-4969; www.visitwashingtoncountypa.com/outdoor.php?memberid=18.
Rhode Island. Gaspee Days Arts and Crafts Festival 2012 runs 10 a.m.-5 p.m. May 26-28 at Pawtuxet Park, Narragansett Parkway, Warwick. The festival hosts 150-200 craft exhibitors, and attracts 50,000 guests. It features a food court, music and entertainment. Free. 401-781-1772; www.gaspee.com/ArtsandCrafts.htm.