Calvert County Department of Economic Development, Courthouse, Prince Frederick, (800) 331-9771, www.co.cal.md.us/cced.
Annmarie Garden on St. John, Solomons, (410) 326-4640, www.annmariegarden.org, free. Even the rest rooms are pretty at this public garden and art gallery on St. John Creek.
Battle Creek Cypress Swamp Sanctuary, Prince Frederick, (410) 535-5327, free. It's an old, oft-debated question: Is Maryland a Northern or Southern state? For some folks, this sanctuary holds the answer in its stand of bald cypress trees, the northernmost naturally occurring ones in America. See them via an elevated boardwalk, and learn about them at the nature center.
Calvert Cliffs Nuclear Power Plant, 1650 Calvert Cliffs Parkway, Lusby, (410) 495-4673, www.calvertcliffs.com, free. Nuclear power: a safe, clean alternative to fossil fuels or a grave environmental threat? A visit to the Calvert Cliffs plant, which provides much of Baltimore's electricity, is not likely to settle that question, but you do get a nifty view of the facility from a lookout point, and you can pretend you're Homer Simpson at some hands-on exhibits.
Calvert Marine Museum, 14200 Solomons Island Road, Solomons, (410) 326-2042, www.calvertmarinemuseum.com, $2-$5. Easily bored by museums? Try this one, which offers a variety of attractions including collections of work boats; Calvert Cliffs fossils, paintings, and woodcarvings; a re-created salt marsh and river-otter habitat; and trips on the 100-year-old Wm. B. Tennison to the restored Drum Point Lighthouse. On Aug. 9 the annual Cradle of Invasion program arrives for three days with its World War II displays and activities, including weapons demonstrations. Now that should keep you awake. Or try the Sharkfest, a day of shark-related activities, July 20.
Chesapeake Beach Railway Museum, 4155 Mears Ave., Chesapeake Beach, (410) 257-3892, free. Sort of like Coney Island south, the Monte Carlo-style Chesapeake Beach resort and amusement park once attracted weekend crowds of people who reached it via the Chesapeake Beach Railway. That was long ago, back in the early 1900s. Today all that remains is a station house, and the photos and artifacts it holds.
Christ Episcopal Church, 3100 Broomes Island Road, Port Republic, (410) 586-0565, (410) 586-0482, free. Built of logs in 1672 and rebuilt of bricks in 1772, this Colonial-era church stands next to a preserved one-room schoolhouse.
Jefferson Patterson Park and Museum, 10115 Mackall Road, St. Leonard, (410) 586-8500. A good time to visit this museum of farm and Chesapeake Bay history is 7-10 p.m. June 22, when the annual 1812 Tavern Night celebrates 19th-century music, food, and drink.
Calvert County Farm Tour and Produce Sale, 1-5 p.m. July 21, various locations. Working farms in the county are open for visiting today, plus there are agriculture demonstrations to see, hay rides to ride, and animals to pet.
Solomons Fourth of July Celebration, July 4, Solomons waterfront, (410) 326-1950, (888) 580-3856. You know--flags, fireworks, etc.
SPORTS & RECREATION
Bunky's Charter Boats, 14448 Solomons Island Road South, Solomons, (410) 326-3241. Hop on a 16-foot Carolina skiff and spend a day on the Patuxent River.
Calvert Cliffs State Park, Lusby, (301) 872-5688, $3. This 1,460-acre park offers hiking, picnicking, fishing, and, for fans of prehistory, fossil hunting.
Chesapeake Beach Water Park, 4079 Gordon Stinnett Ave., Chesapeake Beach, (410) 257-1404, (301) 855-3803, $4.50-$13.50. Water slides (eight of 'em) and water volleyball for active folk, a sunny beach for everyone else.
Rod-N-Reel Charter Captains, Chesapeake Beach, (800) 233-2080. Blues, drum, flounder, rockfish, and trout are among the swimming creatures you might nab from the decks of Rod-N-Reel's charter boats.
Twin Shields Golf Club, 2425 Roarty Road, Dunkirk, (301) 855-8228, (410) 257-7800. Eighteen holes (par 70), a pro shop, a driving range, and a snack bar.
A-1 Antiques and Collectibles, 3736 Chesapeake Beach Road, Chesapeake Beach, (301) 855-4500. This place has nothing to do with steak sauce, but plenty to do with old furniture and coins.
Calvert County Farmers Market, 9 a.m.-6 p.m. Saturdays-Sundays June-September, Prince Frederick, (410) 535-4583. Buy some produce in this open-air market, then steal some recipes from the restaurant next door.
Southern Maryland Antiques Center, Huntingtown, (410) 257-1677, (301) 855-6865. May 26 is as good a day as any to visit here, for the Memorial Day Outdoor Antiques Market (10 a.m.-5 p.m.).
812 Park Ave.
Baltimore, MD 21201