The gasholder building is located in South Troy. A large, round brick building with a domed roof and cupola, it was built to house coal gas. It’s currently used for storage. While the building isn’t open to the public, it’s interesting to come upon it nestled in among the short row houses and narrow streets of South Troy. It was built in 1873 by the Troy Gas Light Company. Designed by Frederick A. Sabbaton, a prominent New York State gas engineer, the structure once housed a large two-lift iron gasholder that rose and fell according to the amount of illuminating gas being stored in it. The Troy Gas Light company first supplied the city with illuminating gas in 1848.