Calendar of shows.(Calendar)

March 31-April 2. Arlington Heights, Ill. ARLINGTON PARK SPRING ANTIQUES SHOW & SALE. Dolphin Promotions presents its 3rd annual spring show filled with quality antiques offered by more than 150 dealers from across the United States and Canada. The spring show includes a huge selection of antique furniture, silver, porcelain, bronzes, crystal, pottery, rugs, antique and estate jewelry, textiles, paintings, posters, maps & prints, watches, and much more on two levels of shopping. Admission: $8, good all weekend. Show hours: Friday and Saturday, 11 a.m. to 7 p.m.; Sunday, noon to 5 p.m. Location: Arlington Park Racecourse, 2200 W. Euclid Avenue (at Route 53). For information: 708-366-2710, www.dolphinfairs.com.

April 1-October 31. Cape Cod, Mass. HERITAGE MUSEUMS & GARDENS--Nature's Treasures: The Shellwork of Evelyn Way Kendall--The exhibit takes a historic look at shell collecting and art, as well as its recent revival as a chic technique. Admission charged. Location: Pine and Grove Streets, Sandwich. For information: 508-888-3300, www.heritagemuseumsandgardens.org.

April 7-9. Chicago, Ill. CHICAGO MODERNISM. Dolphin Promotions, Inc., with Jacques Caussin present the 3rd annual Chicago Modernism Exposition & Sale, featuring 75 noted national and international decorative and fine arts dealers presenting all design movements of the 20th century displayed in room-setting vignettes. Gala Preview: 6 to 9 p.m. Friday, April 7, benefits The Architecture & Design Society of The Art Institute of Chicago. Preview tickets: $75 in advance, $100 at the door (available by calling 312-443-4751 or www.archdesignsociety.org. Show hours: Saturday, 10 a.m. to 7 p.m.; Sunday, noon to 5 p.m. Weekend admission: $10. For information: 708-366-2710, www.chicagomodernism.net.

April 8-11. Philadelphia, Pa. 45th ANNUAL PHILADELPHIA ANTIQUES SHOW. The Philadelphia Antiques Show is the premier antiques and decorative arts show in the country featuring a large selection of American antiques. A special loan exhibit highlights The Schuylkill Villas and will showcase the 18th century houses in Philadelphia's Fairmount Park. Location: 33rd Street Armory. For information: www.philaantiques.com.

April 21-23. Denver, Colo. 24th ANNUAL DENVER ANTIQUES SHOW & SALE. High caliber antiques show in a garden setting benefiting Central City Opera. Held at Wings Over the Rockies Air and Space Museum. Friday lecture & luncheon features Charles Faudree. Sunday flower arranging demonstration. Show hours: Friday and Saturday, 11 a.m. to 6 p.m.; Sunday, 11 a.m. to 5 p.m. Admission: $10. For information: 303-806-5109, www.denverantiquesshow.com.

April 21-23. Glencoe, Ill. CHICAGO BOTANIC GARDEN ANTIQUES & GARDEN FAIR. More than 100 exhibitors of fine garden furnishings, design, and decor featuring an extraordinary selection of garden, porch, and terrace furniture, garden statuary and ornaments, fountains and gazebos, as well as gardening tools, books, and plants. Exhibitors from the United States and Europe present cutting-edge garden design ideas. Throughout the show, garden design and antiques experts will lead free walks and talks on what's current in garden antiques and design. Bunny Williams, renowned author and designer, will serve as honorary chair of the Preview Evening and Fair, and host a lecture and book signing on Friday, April 21. The show opens with a spectacular preview on Thursday, April 20, from 6 to 10 p.m. Show hours are Friday and Saturday from 10 a.m. to 7 p.m., and Sunday from 10 a.m. to 5 p.m. Location: Chicago Botanic Garden, approximately 25 miles north of downtown Chicago. Managed by Stella Show Mgmt.: 212-255-0020; www.stellashows.com. For information: www.chicagobotanic.org/antiques.

April 22-23. Easton, Md. 13th ANNUAL CHARITY ANTIQUES SHOW AND SALE. Benefits the Mental Health Association in Talbot County. Show hours: Saturday, 10 a.m. to 5 p.m.; Sunday, 11 a.m. to 5 p.m. Admission: $7. Location: Waterfowl Festival Building, 40 South Harrison Street. For information: 410-822-0444, www.mhamdes.org.