Amherst Avenue Historic District

Ticonderoga High School is a historic high school building located at Ticonderoga in Essex County, New York. It was built in 1928-1930 and is a three-story, masonry neo-Georgian style building with a slate roof, concrete foundation, and brick walls. It features a semi-circular portico with Corinthian order columns and a balustrade and a copper polygonal cupola. It was listed on the National Register of Historic Places in 1988. As of 2021, the building is still in use as the sole public high school operated by the Ticonderoga Central School District.

The NYS Armory is a historic former National Guard armory building located at Ticonderoga in Essex County, New York. It was built in 1934–1935 and is a large, two story T-shaped brick and case stone building with Tudor and Jacobean Revival style features. The main seven bay block has a steeply pitched, slate-covered hipped roof and is flanked by two bay wings. It was listed on the National Register of Historic Places in 1988. The building now serves as a local community center.

Central School was a historic school building located at Ticonderoga in Essex County, New York. It was built in 1906 and was a 2+1⁄2-story, eleven-bay-wide by seven-bay-deep brick building with Jacobean Revival style features. The features included parapeted gables, round arched entrances, and a steeply pitched multi-gabled roof. A rear 1+1⁄2-story addition had a slate hipped roof. It was built on the site of the Academy, Ticonderoga's first high school. It was used as a school until 1967; from 1967 to 1984 it was used as a civic center for community activities. It was listed on the National Register of Historic Places in 1988, and was demolished in 2001.

H. G. Burleigh House is a historic home located at Ticonderoga in Essex County, New York. The home was originally owned by U.S. Congressman Henry G. Burleigh, and was built in 1894 and enlarged in 1905. It is a 2+1⁄2-story, irregularly massed stone and concrete veneer Queen Anne–style building with Colonial Revival features. It is a 2+1⁄2-story, rectangular, gable-roofed structure built of brick. It features a central Palladian window at the second level. It features complex massing, molded chimneys, multiple roofs, corner towers, as well as classical columned and shingle-sheathed porches. It was listed on the National Register of Historic Places in 1988.

Lake George Avenue Historic District is a national historic district located at Ticonderoga, in Essex County, New York. The district contains 20 contributing buildings on 14 properties; 12 houses and eight garages. It includes single-family homes built between 1919 and 1921 by W.A. Gale for the Ticonderoga Pulp and Paper Company as rental properties for company management. The houses share a common American Craftsman influenced bungalow style. Gale also constructed the houses in the Amherst Avenue Historic District. It was listed on the National Register of Historic Places in 1989.

The Clayton H. Delano House is a historic house located at 25 Father Jogues Place in Ticonderoga, Essex County, New York.

US Post Office-Ticonderoga is a historic post office building located at Ticonderoga in Essex County, New York, United States. It was designed and built in 1936–37, and is one of a number of post offices in New York State designed by the Office of the Supervising Architect of the Treasury Department under Louis A. Simon. The building is in the Colonial Revival style and is a symmetrically massed, one story brick building with a stone watertable. The slate covered gable roof is topped by a square, flat-topped cupola with Doric order pilasters. The interior features a 1940 mural by Frederick Massa titled The Exhortation of Ethan Allen. It was listed on the National Register of Historic Places in 1989.

Ticonderoga National Bank is a historic bank building located at Ticonderoga in Essex County, New York. It was built between 1927 and 1929 and is a two-story, three by seven bay, trapezoidal granite building in the Renaissance Revival style. It features a monumental arcade, large round arched windows, and a massive banking hall. It was listed on the National Register of Historic Places in 1988.

The PAD Factory is a historic factory building located at Ticonderoga in Essex County, New York. It was built in 1893 and is a 3-story, five-by-three-bay brick industrial building with a fieldstone foundation and a low pitched gable roof. It was originally built for the manufacture of blank books, but was used almost immediately for a variety of purposes including a temporary school and shirt factory. It was converted for residential and commercial uses in 1981. It was listed on the National Register of Historic Places in 1988.

Black Watch Library is a historic library building located at Ticonderoga in Essex County, New York. It was built in 1905 and is a one-story brick structure with a cruciform plan in the Jacobean Revival style. It features a blue / green slate gable roof with projecting rafter ends. It was listed on the National Register of Historic Places in 1988.

Silas B. Moore Gristmill is a historic grist mill located at Ticonderoga in Essex County, New York. It was built in 1879–80 and is a two-story, three-bay wood-frame commercial building with shiplap siding and Italianate style details. A two-story, rectangular addition completed about 1885 is attached to the rear of the main block. It was listed on the National Register of Historic Places in 1988.

The Ferris House is a historic house located at 16 Carillon Road in Ticonderoga, Essex County, New York.