Theme parks are the most photographed attractions in the United States, according to a Polaroid survey of more than 200 film processors.

The next most photographed attractions were (in order) the Grand Canyon, the Statue of Liberty, the Washington Monument, Niagara Falls, Yosemite National Park, the Golden Gate Bridge, the Empire State Building, the New York City skyline and the Colorado Rockies.BRITISH SCENES: Travelers can step into the settings of their favorite movies and television shows filmed in Britain by using the British Tourist Authority's new Movie Map. The map, offered free, features locations ranging from stately homes in "Brideshead Revisited" to Edinburgh locations seen in "The Prime of Miss Jean Brodie" to colleges of Cambridge and Eton used in "Chariots of Fire," and locations for "Mystery," "Help!" and "My Fair Lady." Nearly 80 locations are identified on the map. For a free copy of "The Movie Map," call the British Tourist Authority at (212) 581-4700.

IF IT'S TUESDAY... : The Belgian government has launched a telephone assistance number for tourists lost in the French parts of Belgium or in need of travel information. Visitors can phone 15-55-55 from anywhere in Belgium at the cost of a local call. Multilingual clerks answer queries daily from 9 a.m. to 7 p.m.

The phone information service is part of a new "Wallonie Welcome" program, which also provides on-the-spot tourist information in Belgium's French-speaking provinces. For information in English, visitors should locate information officers wearing a Wallonie Welcome decal: a yellow daisy on a white background outlined in blue, with a green and yellow rainbow and the word "Bellesud" in blue.

CULTURAL LINES: Boston isn't the only northeastern city where visitors can tour from sight to sight by following a trail painted in the streets. Now Philadelphia has introduced a Red Line path to the cultural institutions in the Benjamin Franklin Parkway area.

The Red Line starts at the Philadelphia Visitors Center at 16th Street and John F. Kennedy Boulevard, and takes visitors to eight cultural institutions: Philadelphia Museum of Art, Rodin Museum, the galleries at Moore College of Art and Design, Please Touch Museum, Franklin Institute Science Museum, Academy of Natural Sciences, Pennsylvania Academy of the Fine Arts and he Free Library of Philadelphia Central Branch.

DUTCH TREAT: Seventy-five American-owned Dutch masterpieces will be displayed at the Mauritshuis Museum in The Hague, starting Sept. 25.

Among the works from the Dutch Golden Age are pieces by Rembrandt, Vermeer, Frans Hals, Jan Steen, Pieter de Hooch, Ruisdael, Hobbema, Potter, Van de Velde, and Van Goyen. All are from public or private American collections. To order tickets, write to VVV Tourist Office The Hague, P.O. Box 17224, 2502 CE The Hague.

EAST GERMAN PASS: GermanRail, Inc. is now offering the first ever East German rail pass. To get it, the traveler must first buy a West German rail pass or a Eurailpass. Information: (212) 308-3100; to order, phone (800) 223-6036.