Gilmanton Ironworks Library

Gilmanton Ironworks (alternately Gilmanton Iron Works) is an unincorporated community in the town of Gilmanton in Belknap County, New Hampshire, United States. It is located near the eastern boundary of the town, along a stretch of the Suncook River south of the outlet of Crystal Lake. New Hampshire Route 140 runs through the village, leading east to Alton and west to the center of Gilmanton and then Belmont. The Gilmanton Ironworks ZIP code (03837) serves the eastern portion of the town of Gilmanton.

Camp Fatima is a Catholic overnight summer camp located in Gilmanton Iron Works, NH. The camp has a waterfront on the northern shore of Upper Suncook Lake.

Crystal Lake is a 455-acre (1.8 km2) water body located in Belknap County in the Lakes Region of central New Hampshire, United States, in the town of Gilmanton. Crystal Lake is at the head of the Suncook River watershed. Water flows into Crystal Lake from the Belknap Range through Manning and Sunset lakes to the north. Water from Manning Lake enters Crystal Lake via Nelson Brook. Other waterways flowing into Crystal Lake include Wasson Brook and Mill Brook. Water flows out of a dam from the southern end of Crystal Lake via the Suncook Lakes and Suncook River to the Merrimack River. Shoreline development along Crystal Lake consists primarily of summer cottages, with a few year-round residents. Belknap Mountain and Mount Major can be seen from the shoreline.

The Suncook Lakes are a pair of lakes located in Belknap County in central New Hampshire, United States, in the town of Barnstead. Upper Suncook Lake encompasses 402 acres (1.63 km2), while Lower Suncook Lake covers 295 acres (1.19 km2). The lakes are connected by a 1,000-foot-long (300 m) channel, spanned by a road bridge. A dam at the outlet of Lower Suncook Lake controls the water level of both lakes. The lakes are located along the Suncook River, a tributary of the Merrimack River. There are three islands on Lower Lake. Lower Suncook Lake has an average depth of 9 feet (2.7 m) and a maximum depth of 16 feet (4.9 m), while Upper Suncook Lake has a greater average depth and a maximum depth greater than 40 feet (12 m). The lakes are classified as a warmwater fishery, with observed species including smallmouth and largemouth bass, chain pickerel, horned pout, and white perch. Rainbow trout can be found in the deeper Upper Suncook Lake.

Sunset Lake is a 253-acre (1.02 km2) water body located in Belknap County in the Lakes Region of New Hampshire, United States, in the towns of Gilmanton and Alton. Water from Sunset Lake flows south to Crystal Lake, the head of the Suncook River, which flows to the Merrimack River and ultimately the Gulf of Maine. The lake is classified as a warmwater fishery, with observed species including smallmouth and largemouth bass, rainbow smelt, chain pickerel, brown bullhead, sunfish, and yellow perch.

Griswold Scout Reservation (GSR) is a 3,500-acre (14 km2) reservation for Scouting located near Gilmanton Ironworks, New Hampshire, and operated by the Daniel Webster Council of the Boy Scouts of America. It comprises two camps, Hidden Valley Scout Camp and Camp Bell, which both run an eight-week summer camping program. Founded in 1971, Griswold Scout Reservation serves Venturing crews and Scouts BSA troops all across New England.

The Smith Meeting House is a historic church at the junction of Meeting House and Governor Roads in Gilmanton, New Hampshire. Built about 1840, it is a well-preserved example of a vernacular 19th-century church building. The building was listed on the National Register of Historic Places in 1998.

The First Baptist Church of Gilmanton, also known as the Lower Gilmanton Church, is a historic church building on Province Road (New Hampshire Route 107), slightly north of Stage Road, in Gilmanton, New Hampshire. Built in 1842, the church is one of Belknap County's finest Greek Revival churches, and is accompanied by the county's most intact 19th-century horsesheds. The property was listed on the National Register of Historic Places in 1989.

Meadow Pond Dam was an earthen dam in Alton, New Hampshire, in the United States, that collapsed in 1996, causing a fatal flood.

The Abraham Jaquith House, also known as Farley Garrison house, is a house at 1246 Province Road in Gilmanton, New Hampshire. Built about 1725 in Billerica, Massachusetts, it was dismantled and moved to its present location in the early 2000s. It was listed on the National Register of Historic Places in 1991, and was delisted in 2024.

Locke Lake is a 149-acre (60 ha) water body located in Belknap County in central New Hampshire, United States, in the town of Barnstead. It is fed by Halfmoon Lake and drained by Webster Stream. It is surrounded by the Locke Lake Colony, a private development. There is no public access to the lake. The lake is part of the Suncook River watershed, flowing south to the Merrimack River.

Alton Bay State Forest is a 210-acre (85 ha) protected area in Alton, New Hampshire. It was acquired in 1915. It is bordered to the east by the village of Alton Bay at the south end of Lake Winnipesaukee.