Mt. Hagen, Papua New Guinea: At the Mt. Hagen cultural show, Aug. 19-20, 50 local tribes meet for a colorful ritual of dance and music that attracts thousands of spectators.

Pebble Beach, Calif.: Concours d'Elegance, Aug. 20, an exhibition of world-class pre- and postwar automobiles.

Peterborough, England: The Peterborough Beer Festival, Aug. 22-27, more than 400 ales.

Cleveland: The Slavic Village Harvest Festival, Aug. 26-27, celebrating the heritage of one of the country's largest Polish-American communities.

London: Notting Hill Carnival, Aug. 27-28, a huge street fair with colorful floats and music.

Eilat, Israel: The Red Sea Jazz Festival, Aug. 28-31, a major Middle Eastern jazz event.

Queens, N.Y.: The U.S. Open tennis championships at Flushing Meadows, Aug. 28-Sept. 10.

Buñol, Spain: The Tomatina, Aug. 30, probably the world's largest food fight, painting the town red with a couple of hundred tons of hurled tomatoes.

Britain (various): The Tour of Britain bicycle race, Aug. 30-Sept. 4, England and Scotland's answer to the Tour de France.

Chicago: Chicago Jazz Festival in Grant Park, Aug. 31-Sept. 3.

Black Rock Desert, Nev.: Burning Man Festival, Aug. 31-Sept. 4.

Venice, Italy: Venice International Film Festival, Aug. 31-Sept. 10.

September

Sausalito, Calif.: Sausalito Art Festival, Sept. 1-4.

Seattle: Bumbershoot arts festival, Sept. 1-4.

Telluride, Colo.: Telluride Film Festival, Sept. 1-4.

Zagreb, Croatia: International Puppet Festival, Sept. 1-8.

Aarhus, Denmark: The Aarhus Festival, Sept. 1-10, Scandinavia's biggest annual cultural fest, with drama, opera, dance, classical and contemporary music, films and more.

Lisdoonvarna, Ireland: Lisdoonvarna Matchmaking Festival, Sept. 1-Oct. 1.

Braemar, Scotland: The Braemar Gathering, Sept. 2, one of Scotland's best-known and well-attended Highland games, with the queen in attendance.