Land in 1828" also shows the name "Haymarket Square". The name was applied because the square was "the site of one of several public scales used for weighing and selling hay." Images from the mid-1800s show hay being sold in the square. The Haymarket Pushcart Association, which traces its history to 1820, still operates the Haymarket market a block away. From its opening in 1845 to its demolition in 1897, the most prominent building on the square was the Boston and Maine Railroad depot. According to an 1892 guidebook, "The Boston and Maine Railroad, alone of all lines entering the city on the north side, enjoys the privilege of penetrating within the outer street. Its station is in Haymarket Square, and the open space in front of it gives prominence to the structure." The railroad provided service to Lowell, Portland, and Lake Winnipesaukee. In 1893, the depot was replaced by North Union Station, several blocks to the north on Causeway Street. The depot was demolished to make way for construction of the Haymarket Relief Station (a branch of Boston City Hospital) and the Canal Street incline (the northern end of the Tremont Street subway, the predecessor to the MBTA Green Line). The Haymarket station on the subway line opened in 1898, with an entrance kiosk in the center of Haymarket Square. Workers excavating for the station and incline uncovered a portion of the wall of the Middlesex Canal, which formerly terminated at the square. 20th century: destruction All the buildings around the square, as well as the square itself, were demolished in the 1950s for the construction of the elevated Central Artery or in the 1960s and 1970s for the construction of Government Center. Architectural critic Robert Campbell wrote in 1992 that the former site of the Relief Station resembled "a shell-torn battlefield." During the construction of the 2,300-space Government Center Garage, the MBTA Haymarket Station was rebuilt. The northeast corner of the garage was located on the former location of Haymarket Square. 21st century: further changes Construction began in January 2017 on Bulfinch Crossing, a 2.9 million square foot redevelopment on the site of the Government Center Garage. The northeast corner of the garage is at the location of Haymarket Square. "Haymarket Square" was the original name of a hotel and market building which began construction in 2018 on Blackstone Street, a block south of the historic location of