mˈoʊst əv ðɛɹ bˈɪldɪŋz ɪnðə sˈɪɾi wɜː kəmˈɜːʃəl, sˈʌtʃ ɐz ðə bˈiː. ˈɔːltmən ænd kˈʌmpəni bˈɪldɪŋ ænd ðə sənt. ɹˈiːdʒɪs hoʊtˈɛl ˌɔn fˈɪfθ ˈævənˌuː, ænd ðɪ ˈiːst wˈɪŋ ʌvðɪ ɐmˈɛɹɪkən mjuːzˈiəm ʌv nˈætʃɚɹəl hˈɪstɚɹi.
Most of their buildings in the city were commercial, such as the B. Altman and Company Building and the St. Regis Hotel on Fifth Avenue, and the east wing of the American Museum of Natural History.