The International Express -- The no. 7 train, which originates in Manhattan at Times Square, makes three stops in that borough, and then snakes, mostly above ground, through the heart of ethnic Queens, is also popularly known as the International Express. Built by immigrants in the early 1900s, the no. 7 IRT (Interborough Rapid Transit) brought those same immigrants to homes on the outer fringes of New York City. That tradition has continued as immigrants from around the world have settled close by the no. 7's elevated tracks. Get off in Sunnyside and notice Romanian grocery stores and restaurants; a few stops further in Jackson Heights you'll see Indians in saris and Sikhs in turbans; go all the way to Flushing and you'll think you are in Chinatown. You are -- Flushing's Chinatown, as big or bigger than Manhattan's. In 1999 the Queens Council on the Arts nominated the International Express for designation as a National Millennium Trail and that resulted in its selection as representative of the American immigrant experience by the White House Millennium Council, the United States Department of Transportation, and the Rails-to-Trails Conservancy. For more about the International Express and for tours, visit the Queens Council on the Arts website at www.queenscouncilarts.org (tel. 718/647-3377).