(FORTUNE Magazine) – The name on a famous building doesn't necessarily reveal who owns it, as shown here. Foreigners have long been lured by U.S. real estate. According to Ivan Faggen, director of Arthur Andersen's Real Estate Services Group, the British and Canadians have the biggest holdings. But the Japanese are gaining ground, he says, buying at the rate of $12 billion to $15 billion a year. Mitsubishi now controls New York's Rockefeller Center. True, the Empire State Building is still in U.S. hands (the Pru's). San Francisco's Transamerica Pyramid is even owned by its namesake company. So is the Sears Tower in Chicago. But it is for sale, unless Sears Roebuck changes its mind. Also on the block: Washington's Watergate Hotel, now owned by Britain's National Coal Board pension fund.R.J.