United States Post Office (Niagara Falls, New York)

First Unitarian Universalist Church of Niagara is a historic church located at Niagara Falls in Niagara County, New York. It was constructed in 1921 in a Classical Revival style. The steel and concrete church is faced with rough, uncut limestone from the bedrock excavated for the building's foundation.It was listed on the National Register of Historic Places in 2007.

St. Mary's Nurses' Residence is a historic residence hall located at Niagara Falls in Niagara County, New York. It was constructed in 1928 as a Diploma School for nurses affiliated with the Mount St. Mary's Hospital, operated by the Sisters of St. Francis. After being abandoned for 20 years, it was redeveloped as "Carolyn's House"; a transitional home and job-training center for homeless women and their children operated by the YWCA of Niagara.It was listed on the National Register of Historic Places in 2004.

Hazard H. Sheldon House, also known as the Sheldon-Benham House, is a historic home located at Niagara Falls in Niagara County, New York. It was built about 1857 and is a 1+1⁄2-story, L-shaped dwelling built of native gorge stone in the Italian Villa style. It has a low pitched gable roof with deep overhanging eaves. From 1857 to 1900, it was the home of Hazard H. Sheldon (1821-1900), an important figure in the early civic affairs of Niagara Falls.It was listed on the National Register of Historic Places in 2011.

Niagara Falls School District Administration Building is a historic government building located at Niagara Falls, Niagara County, New York. It was built in 1927–1928, and is a two-story, 14-by-5-bay, buff-colored brick building with Classical Revival detailing. It has a flat roof, limestone trim, a partially exposed finished basement, and rear ell. It features a pedimented central entry portico and arched first floor windows. It remained in use by the city schools until 2007.It was listed on the National Register of Historic Places in 2014.

Mount St. Mary's Hospital or St. Mary's Manor is a historic Neoclassical Revival hospital building located at Niagara Falls in Niagara County, New York. It was listed on the National Register of Historic Places in 2015.

Park Place Historic District is a national historic district located at Niagara Falls in Niagara County, New York. It encompasses 89 contributing buildings, one contributing site, one contributing structure, and one contributing object. It is principally a residential district built between 1885 and 1928. The dominant architectural styles are Italianate, Queen Anne, Colonial Revival, and Arts and Crafts. Within the district is a park with a prominent obelisk, known as "The Cenotaph," and a notable stone fence. Located within the district is the separately listed James G. Marshall House. r It was listed on the National Register of Historic Places in 2010.

Niagara Falls City Hall is a historic city hall located at Niagara Falls in Niagara County, New York. It was constructed in 1923–1924, in the Beaux-Arts style. The building embodies Neo-Classical Revival architectural details. It features a centrally arranged rectangular form, with a central projecting pavilion, fluted columns with Ionic capitals, and smooth ashlar sandstone walls with pilasters.It was listed on the National Register of Historic Places in 2001.

The Niagara Falls Street Circuit was a temporary street circuit located near Niagara Falls, New York, USA, which briefly hosted Trans-Am Series for a single season in 1988.

The Niagara Gorge Discovery Center, also known as the Schoellkopf Geological Museum, is on the American side of Niagara Falls within Niagara Falls State Park and the city of Niagara Falls, New York. It opened in 1971. Its role is to showcase the natural history of the Falls and the Niagara Gorge via the ancient rock layers and minerals. The museum also showcases the history of the Great Gorge Route trolley line and features a number of hiking trails.The museum's location is where the Schoellkopf Power Station, one of the first hydroelectric plants in the United States, stood until it was destroyed by rockfall in 1956.

Niagara Falls Armory is a historic New York National Guard armory located at Niagara Falls in Niagara County, New York. It consists of a two-story, hip-roofed administrative building with a one-story drill hall built in 1895 in a castellated, fortress-like style typical of that period. It was designed by architect Isaac G. Perry. The administration building features a 4+1⁄2-story round tower at the southwest corner, and a three-story round tower at the northwest corner.It was listed on the National Register of Historic Places in 1995.

The Schoellkopf Power Station was built on land owned by Jacob F. Schoellkopf above the Niagara Gorge near the American Falls, 1,600 feet (490 m) downriver from Rainbow Bridge. Understanding the growing need for electricity and the role of harnessing the Falls, Schoellkopf purchased the land for the hydraulic canal on May 1, 1877 for $71,000. After Schoellkopf Sr.'s death in 1903, his sons took over the operation of the power business. In 1918, Schoellkopf's Niagara Falls Hydraulic Power and Manufacturing Company merged with the Niagara Falls Power Company, which was owned by Edward Dean Adams. Much of the site is, as of 2014, occupied by the Maid of the Mist tour boat company as a maintenance area and off-season boat storage yard. The power station remains form a part of a fully accessible tourist attraction associated with Niagara Falls State Park and is connected with its Niagara Gorge hiking trail system.

The Niagara Falls Public Library, located at 1425 Main Street, in Niagara Falls in Niagara County, New York. The Main Library is the largest library in the Niagara-Orleans-Genesee Library System. The Main Library in the Earl W. Brydges Building, was built in 1974 by Paul Rudolph, and the LaSalle Branch is located at 8728 Buffalo Avenue in the LaSalle District of Niagara Falls.