Three blocks south of Pine Street, buses and trains enter University Street station, located between Union and Seneca streets adjacent to Benaroya Hall and 1201 Third Avenue in the financial district. The station has a split mezzanine, with entrances to 2nd Avenue and University Street accessible from the north half, and an entrance to Seneca Street from the south half. From University Street, the tunnel continues under 3rd Avenue for five blocks, entering the Pioneer Square neighborhood and historic district. At this point, 3rd Avenue passes several of Seattle's skyscrapers, including the historic Seattle Tower, Safeco Plaza, the Fourth and Madison Building and the Wells Fargo Center. Within University Street station, the tunnel passes over the century-old Great Northern Tunnel with a clearance of .