You won't find a B. Dalton, Gap or Olive Garden at this Chinatown landmark. You will find an exotic Asian market with fresh produce, meats and seafood; unusual sauces and condiments; inexpensive housewares and decorations; and an outstanding selection of drinks, snacks, candy and sweets. Elsewhere in the building are shops that sell herbal remedies and books on Asian (largely Vietnamese) culture. Hair salons and restaurants lease space, but the turnover rate seems high. Business looks good, though, for the Banh Mi Hoang Son sandwich counter. Asian-Americans, downtown dwellers, local artists and bike messengers drop in for cheap and delicious tofu sandwiches ($1.50) and inexpensive Vietnamese food.