St. Mark's Church (Port Leyden, New York)

Port Leyden is a village in Lewis County, New York, United States. As of the 2020 census, Port Leyden had a population of 554. The name is derived from the village's early history as a port on the Black River Canal. The village of Port Leyden is mostly in the town of Leyden, but a portion of the village lies to the east of the Black River in the town of Lyonsdale. The village is 17 miles (27 km) south of Lowville, the county seat, 8 miles (13 km) north of Boonville, and 25 miles (40 km) by road west-southwest of Old Forge.

Cold Brook is a stream in Lewis County, New York, United States, that flows into the Black River near Port Leyden, New York. It has a drainage area of 4.80 square miles, and is designated by the United States Geological Survey as "Hydrologic Unit 04150101".

Miller Brook flows into the Black River near Port Leyden, New York.

Wildwood Cemetery and Mary Lyon Fisher Memorial Chapel is a historic cemetery and chapel located at Lyons Falls in Lewis County, New York. The cemetery was established in 1906, and the chapel constructed in 1921. It remains an active burial ground containing 736 marked burials. The memorial chapel is a two-story, masonry building in the Late Gothic Revival style designed by Utica architects Gouge & Ames. It consists of a rectangular main section, measuring 19 feet by 24 feet, with a rear chancel addition measuring 9 feet by 15 feet. Also in the cemetery is a contributing plaque to Caleb Lyon Sr. It was listed on the National Register of Historic Places in 2011.

The Moose River is a mountain waterway in upstate New York which consists of three branches: the North Branch, the Middle Branch and the South Branch. The outlet of Big Moose Lake forms the North Branch in northern Herkimer County. The Middle Branch originates at the Fulton Chain Lakes in Old Forge. And the Southern Branch has its headwaters in Little Moose Lake in Hamilton County. The North and Middle branches merge in old Forge, New York, then flow a few miles before merging with the South branch, and then becomes just Moose River. It flows generally westwardly through Herkimer County into Lewis County, reaching its confluence with the Black River in Lyons Falls.

Leyden is a town in Lewis County, New York, United States. The population was 1,785 at the 2010 census. The town is in the southern part of the county and is north of Rome.

Lyons Falls is a village in Lewis County, New York, United States. As of the 2020 census, Lyons Falls had a population of 570. The village is on the border of the towns of West Turin and Lyonsdale. It is at the junction of state Routes 12 and 12D, approximately 14 miles (23 km) south of Lowville, the county seat.

Gould Mansion Complex is a historic home and national historic district located at Lyons Falls in Lewis County, New York. The district includes three contributing structures: the main house, carriage house and barn, and office building that served as headquarters for the Gould Paper Company. It was listed on the National Register of Historic Places in 1978.

Forest Presbyterian Church is a historic Presbyterian church located at Lyons Falls in Lewis County, New York. It was built in 1894 and is a one-story, brown stained, eclectic, pitched roof building with a front-facing gable, a unique square bell tower with flared eaves, and a porte cochere. The church is in the Shingle Style with Gothic elements. Also on the property is the two story, American Foursquare manse, dated to 1902, and a 19th-century barn. It was listed on the National Register of Historic Places in 2004.

"The Pines" is a historic home and related dependencies located at Lyons Falls in Lewis County, New York. The main house was built about 1860 and is a timber-frame, flat-roofed, vernacular Italianate style residence. It consists of a two-story, five-bay main block with 2 two-story wings. Also on the property are a maple sap boiling house / woodshed (c. 1930); carriage house / garage (c. 1880); main barn (c. 1890); woodshed (ca. 1890); and workshop / shed (c. 1910). It was listed on the National Register of Historic Places in 2007.

Fall Brook flows into the Black River near Port Leyden, New York.

Edmund Wilson House is a historic home located at Talcottville in Lewis County, New York. It was built over a four-year period starting in 1789 and is a 2+1⁄2-story limestone building, three bays wide and four bays long. It was named "The Stone House" by Edmund Wilson, whose family used the house as a summer home and he made it famous in his book Upstate.It was listed on the National Register of Historic Places in 1973.