You can get in via many different subway lines. The 6 line runs under Park Avenue, stopping at 33rd St., 28th St., 23rd St., and 14th St./Union Square, with the 4 and 5 stopping at Union Square as well. The N and R lines run under Broadway, stopping at 34th St., 28th St., 23rd St., and 14th St./Union Square, with the Q also stopping at 34th St. and Union Square. The F and M lines run under 6th Avenue, stopping at 14th St., 23rd St., and 34th St., with the B and D also stopping at 34th St. The L train runs under 14th St., stopping at 1st Av., 3rd Av., Union Square, and 6th Av. Additionally, PATH trains to Hoboken and Jersey City, New Jersey stop at 14th, 23rd, and 33rd Sts. on 6th Avenue. There are plenty of local buses, but they can be slow, especially on crosstown routes and on Park Av. South. Time allowing, walking is highly recommended.