31 THINGS TO DO IN

1 HIKE, bike, swim, or camp among the trees.Today is the 100th anniversary of the U.S.D.A. Forest Service.

2 PLAY your cards right at Las Vegas's centennial celebrations. The Red Hot Chili Peppers headline a free concert in the casino capital tonight.

3 MARVEL at the 123 modern masterpieces donated in a single gift to the Museum of Contemporary Art,Los Angeles.A selection from the newly acquired Blake Byrne Collection goes on display today.

4 LIGHT your sparklers and salute the flagl It's Independence Day!

5 on the American-landscape exhibition at the Hammer useum, in Los Angeles, with video installations by artists Patty Chang and Fiona Tan and photographs by Stephen Shore.

6 CREATE unpretentious art with unorthodox materials Or just check out "The Art of Richard Tuttle," on exhibition at the San Francisco Museum of Art.

7 EXTEND your vacation in the South of France.A unique exhibition of Picasso's "L' Arlesienne"paintings opens today in-where else?Arles.

8 DANSEZ "sur le Pont d'Avignon/' where the city's annual theater festival beams today.

9 the grill. Gourmet magazine and chef Dean Fearing, of the Mansion on Turtle Creek, team up Annual Summer ⅜⅝⅛⅛

10 GO for folk. The second Santa Fe International Folk Art Market, a gathering of artists from around the globe that also features world music and other entertainment, ends today.

11 'em, cowboy! The Calgary Stampede, one of the world's most celebrated rodeos—with steer wrestling, bull riding, calf roping, bucking broncos—is on for another seven days.

12 PACK a picnic and hear a free concert by the New York Philharmonic. For the next week, the orchestra performs in parks throughout N.Y.C.'s five boroughs.

13 THROW a football and walk the red carpet.The 13th annual ESPY Awards show,which recognizes top achievements in sports,takes place today in Hollywod.

14 CELEBRATE the explosion of hip-hop with Wyclef Jean and others at the Africa:America concert, at N.Y.C.'s Lincoln Center.

15 FINGER-PAINT in Rembrandt's honor.The great old master was born on this day on 1606.

16 QUEUE UP.Harry Potter and the Half-Blood Prince, the sixth book in the series by J. K. Rowling, goes on sale today.

17 PUT ON your mouse ears. It's Disneyland's 50th birthday. (S A half-century ago, Walt Disney built the ultimate playground on 160 acres of Anaheim oranae aroves df Ja of Anaheim orange groves.

18 it in the air. The seven-day International Juggling Festival begins today in Davenport, Iowa.

19 DRESS UP for the newly resurrected Berkeley Square Ball, a clamorous aatherina expected to draw some of London's a glamorous gathering expected to draw some of London's most prominent residents.

20 A^^^^our bets. The summer racing season begins today at California's Del Mar racetrack— the horse heaven "where the turf meets the surf."

21 REREAD The Sun Also Rises.Ernest Hemingway was born 106 years ago today, in Oak Park, Illinois.

22 CONDUCT yourself well as the New York Phiharmonic performs at the Bravo! Vail Vally Music Festival.

23 REVISIT the 90s. Lollapalooza, featuring Weexer and Dinosaur Jr., descends on Chicago's Grant Park.

24 GAWK at beautiful people,scantily clad the beach.The Nissan AVP Pro Beach Volleyball tour ends at Hermosa Beach,Calif.

25 BUY in pairs. Matt Bernson's flip-flops, sandals, and wedgies are the best shoes—sexy, simple, and comfortable—we've worn this summer. Sold at Calypso, Kitson, and mattbernson.com.

26 real. DefJam, Inc.: Russell Simmons, Rick Rubin, and the Extraordinary Story of the World's Most Influen*' Hip-Hop Label is available from One World/Ballantine.

27 LAUGH out loud at the first Dallas Comedy Festival, which starts today in the city's historical West End.

28 ticket to ride to Lennon. The new musical, inspired mm\3 by the songs and life of John Lennon, opens today at the Broadhurst Theater, in New York.

29 ENROLL in the School of Rock. The third annual VH1 Save the Music Benefit, which helps bring instruments to public schools, takes place today in the Hamptons.

30 KICK UP your heels at the Vail International Dance Festival.

31 GET overexposed. "The World's Most Photographed," images of 10 iconic figures such as Muhammad Ali and Elvis Presley, is on display at the National Portrait Gallery, in London.