Flour and Grain Exchange Building

State Street Block (built 1857) is a granite building near the waterfront in the Financial District of Boston, Massachusetts. Architect Gridley James Fox Bryant designed it. In the 1850s "the Long and Central Wharf Corporation ... sold each bay to individual owners, requiring that 'the granite to be used for the sidewalk & facade of each bay must be purchased from the Corporation & erected according to the architect's plan.'"Walt Whitman visited Boston in 1860, and wrote about what he saw: "Noblest of all State Street Block, east of the Custom House, rough granite. The above probably one of the finest pieces of com[merical] architecture in the world." Another visitor travelling through Boston (in 1859) called it "a magnificent block."In the mid-20th century, "nearly three-quarters of the original 22-bay building ... was amputated for construction of the Central Artery ... and the roofline of the remainder has been destroyed." The surviving portion of the block was added as part of the Custom House District to the National Register of Historic Places in 1973.

Custom House District is a historic district in Boston, Massachusetts, located between the Fitzgerald Expressway (now Purchase St. / the Rose Fitzgerald Kennedy Greenway) and Kilby Street and South Market and High and Batterymarch Streets. Named after the 1849 Boston Custom House located on State Street, the historic district contains about seventy buildings on nearly sixteen acres in Downtown Boston, consisting of 19th-century mercantile buildings along with many early 20th-century skyscrapers, including the 1915 Custom House Tower.The area is an early example of urban planning, in which the Broad Street Associates hired architect Charles Bulfinch in 1805 to plan the commercial development of the area south of Long Wharf and State Street, which connected the wharf to the city center. The district includes a few Federal period buildings that were built to the standards specified by Bulfinch, but is architecturally diverse, reflecting more than century of economic development. Visually prominent 19th-century buildings include a collection of warehouses built out granite, which marked a departure from the more usual brick construction of the period. The State Street Block, built 1858 to a design by Gridley James Fox Bryant, is another example.The district was added to the National Register of Historic Places in 1973. When first listed, its historically significant buildings were limited to those of the 19th century. An amendment to the listing in 1996 extended the period of significance to 1928, changing a number of architecturally significant early skyscrapers from non-contributing to contributing properties.

The Thomas P. "Tip" O'Neill Jr. Tunnel (colloquially O'Neill Tunnel) is a highway tunnel built as part of the Big Dig in Boston, Massachusetts. It carries the Central Artery underneath downtown Boston, and is numbered as Interstate 93 (I-93), U.S. Route 1 (US 1), and Route 3. It roughly follows the route of the old elevated Central Artery, though the northbound entrance, at the corner of Kneeland Street and Atlantic Avenue, is somewhat east of the southbound exit (at Kneeland and Albany streets) to allow for a reconfigured interchange with the Massachusetts Turnpike. It runs from the Zakim Bunker Hill Bridge at its north portal—barely 165 feet (50 m) east of the TD Garden sports facility's eastern corner—to Boston's Chinatown at its south portal. The tunnel is named for Tip O'Neill, former Speaker of the United States House of Representatives, whose constituency included several of the surrounding communities in Metro Boston.

Aquarium station is an underground rapid transit station on the MBTA Blue Line in Boston, Massachusetts, United States. It is located under State Street at Atlantic Avenue on the eastern edge of Boston's Financial District near Boston Harbor. The station is named for the nearby New England Aquarium. It is adjacent to Long Wharf, which is used by two MBTA Boat lines. The station has two side platforms serving the two tracks of the Blue Line; an arched ceiling runs the length of the platform level. With the platforms 50 feet (15 m) below street level, it is the second-deepest station on the MBTA system (after Porter station). The Boston Elevated Railway (BERy) opened the Atlantic Avenue Elevated on August 22, 1901, with a station at State Street. The BERy opened the East Boston Tunnel under State Street and Long Wharf for streetcars on December 30, 1904. Construction of the intermediate station at Atlantic Avenue under the Elevated was delayed; it opened on April 5, 1906. Unlike other early stations in Boston, which were built with cut-and-cover tunneling, most of Atlantic Avenue station was built as a large barrel vault. The access shaft at the east end of the station was topped with a three-story headhouse, which included a footbridge to the elevated station. Four unusual angled elevators connected the headhouse to the platforms. In 1924, the Boston Transit Department implemented a long-planned project to convert the tunnel from streetcars to high-floor metro trains, with high platforms added at the station. The Atlantic Avenue Elevated closed in 1938, while the subway station remained open. In 1948, the city began replacing the old headhouse and elevators with a smaller structure and escalators. On January 28, 1949, a welder ignited a grease fire that exploded down an elevator shaft, killing three people and burning numerous others. The station was closed until the completion of the renovations in January 1950. The station was renamed Aquarium in 1967 as part of rebranding by the 1964-formed Massachusetts Bay Transportation Authority (MBTA). The MBTA began construction on a major renovation of the station in 1996. The platforms were lengthened for six-car trains, new entrances were added west of Atlantic Avenue, and the station was made fully accessible. The station was closed from October 14, 2000 to October 29, 2001; major construction was completed in 2003. Since the renovation, the station has had water leakage issues; it also occasionally floods during high tides and storm surges. The proposed North-South Rail Link includes a possible Central Station for MBTA Commuter Rail trains located under Aquarium station.

The Custom House Tower is a skyscraper in McKinley Square, in the Financial District neighborhood of Boston, Massachusetts. The original building was constructed in 1837–47 and was designed by Ammi Burnham Young in the Greek Revival style. The tower was designed by Peabody and Stearns and was added in 1913–15. The building is part of the Custom House District, which was added to the National Register of Historic Places in 1973. Standing at 496 ft (151 m) tall, the building is currently tied with The Hub on Causeway Residential Tower as Boston's 19th-tallest buildings. It is part of the Custom House District, which was added to the National Register of Historic Places in 1973. As of 2016, it houses the Marriott Custom House Hotel.

The Custom House in Boston, Massachusetts, was established in the 17th century and stood near the waterfront in several successive locations through the years. In 1849 the U.S. federal government constructed a neoclassical building on State Street; it remains the "Custom House" known to Bostonians today. A tower was added in 1915; the building joined the National Register of Historic Places in 1973 and was designated a Boston Landmark by the Boston Landmarks Commission in 1986.

Harbor Fog, stilled buoys dream of a lost harbor, is a responsive sensor-activated interactive contemporary public sculptural environment located in Boston along the main pedestrian walkway of Wharf District Park Parcel 17, on the Rose Fitzgerald Kennedy Greenway. The first permanent public artwork along the Greenway, the concept was selected through a competition for commission by the Mass Highway Department, and integrated into site construction in collaboration with engineers during building of the Central Artery/Tunnel Project (Big Dig).The Harbor Fog sculpture is part of a genera of environmental artworks that use high pressure cold water fog, hot steam fog, or other gaseous materials, to produce immersive environmental sculpture.

The Rose Fitzgerald Kennedy Greenway is a linear park located in several Downtown Boston neighborhoods. It consists of landscaped gardens, promenades, plazas, fountains, art, and specialty lighting systems that stretch over one mile through Chinatown, the Financial District, the Waterfront, and North End neighborhoods. Officially opened in October 2008, the 17-acre Greenway sits on land created from demolition of the John F. Fitzgerald Expressway as part of the Big Dig project.The Rose Fitzgerald Kennedy Greenway is named after Rose Fitzgerald Kennedy, the matriarch of the Kennedy Family who was born in the neighboring North End neighborhood. Her son, Senator Edward M. Kennedy, played an important role in establishing the Greenway. The Rose Fitzgerald Kennedy Greenway Conservancy was established as an independently incorporated non-profit organization in 2004 to guide the emerging park system and raise funds for an endowment and operations. In 2008, the State Legislature confirmed the Conservancy as the designated steward of the Rose Kennedy Greenway; the Conservancy operates with a lease from the Massachusetts Turnpike Authority (now Massachusetts Department of Transportation). Since February 2009, the Conservancy has operated the park, leading the maturation of this new civic space, strengthening its physical beauty, and encouraging a sense of a shared community in Boston. The 2008 legislation established a 50%-50% public/private funding model. Through a multi-party funding agreement announced in June 2017, public funds from the State and City represent ~20% of the operating budget, a new Greenway Business Improvement District funds ~20% of the operating budget, and the Greenway Conservancy generates ~60%.

Echo of the Waves (also known as Dolphin or Whale) is a sculpture by Susumu Shingu, installed outside the New England Aquarium, in Boston, Massachusetts, United States. It was completed in September 1981, and dedicated on July 6, 1983. The abstract, kinetic structure is made of painted steel and Teflon coated fiberglass, and rests on a painted steel base. It was surveyed as part of the Smithsonian Institution's "Save Outdoor Sculpture!" program in 1994.

The Aquarium Garage Development, was a proposed supertall skyscraper in Boston, Massachusetts. Aquarium Garage Development was intended to be tied as the tallest building in Boston, with Trans National Place. If built, it would have surpassed the 60-story John Hancock Tower by 10 stories and about 210 feet (64 meters). The project was cancelled in 2012.

Two International Place is a Postmodern skyscraper in the Financial District of Boston, Massachusetts. The site is located on a site formerly known as Fort Hill. It is located blocks from the North End, the waterfront, South Station, Downtown Crossing, and the Federal Courthouse. The building was designed by Johnson/Burgee Architects – whose principals are Philip Johnson and John Burgee – and completed in 1992. It is Boston's eleventh-tallest building, standing 538 feet (164 m) tall.

Dolphins of the Sea is a bronze sculpture by Katharine Lane Weems, installed outside the New England Aquarium on Boston's Central Wharf, in the U.S. state of Massachusetts. The sculpture depicts a school of swimming dolphins and measures approximately 4 × 3 × 7 ft. It was copyrighted in 1977. The work was surveyed by the Smithsonian Institution's "Save Outdoor Sculpture!" program in 1997.