Pine Island Plantation Complex

Eddings Point Community Praise House is a historic church located on Saint Helena Island near Frogmore, Beaufort County, South Carolina. It was built about 1900, and is a narrow, one-story gable roofed building of frame construction with the entrance in the gable end. It is significant as one of four known extant African-American praise houses on St. Helena Island, and was a central place in the religious and social life of the black islanders.It was listed in the National Register of Historic Places in 1989.

Coffin Point Plantation, is a historic plantation house located in the Frogmore area of Beaufort County, South Carolina, USA. A Sea Island plantation. Ebenezer Coffin, born in Boston in 1763, received 1120 acres and 63 chattel slaves from his father-in-law and had the house built on the property.It is estimated that the home was built around 1801, and like many early 19th century homes in the area, features a tabby foundation. One of the home's more striking features is the one-half mile avenue of oaks that leads to the home. In 1862, during the Civil War, 260 people were recorded as being enslaved on the plantation.James Donald Cameron, a Republican U.S. Senator from Pennsylvania and former Secretary of War bought the plantation house in the early 1890s. Henry Adams described his visits to the Camerons at the plantation in his book The Education of Henry Adams.The plantation was placed in the National Historic Register on August 28, 1975.

The Coffin Point Plantation Caretaker's House, located in the Frogmore area of Beaufort County, South Carolina and in the shadows of the nearby Coffin Point Plantation, was built in 1892 as a residence for the plantation's caretaker. The Queen Anne style of architecture is considered marginally interesting, but it is noteworthy in that it is the only home known at this time that employed this style. During this era in the plantation's history, the site primary dwelling was owned by James Donald Cameron, who was the Secretary of War under Ulysses S. Grant, and later, United States Senator from 1877 to 1897. The Coffin Point Plantation Caretaker's House was listed in the National Register of Historic Places on May 26, 1989.

Mary Jenkins Community Praise House is a historic church located on Saint Helena Island near Frogmore, Beaufort County, South Carolina. It was built about 1900, and is a narrow, one-story gable roofed building of frame construction with the entrance in the gable end. It is significant as one of four known extant African-American praise houses on St. Helena Island. The building remains in use.It was listed in the National Register of Historic Places in 1989.

Emanuel Alston House is a historic home located on Saint Helena Island near Frogmore, Beaufort County, South Carolina. It was built about 1915, and is a rectangular one-story, vernacular frame dwelling on a brick foundation, with a metal hipped roof. The front façade features a full-width porch, with a low hipped roof. A shed or hipped roof dormer located on the front roof slope provides light and ventilation to the attic space.It was listed in the National Register of Historic Places in 1988.

The Combahee River ( kəm-BEE) is a short blackwater river in the southern Lowcountry region of South Carolina formed at the confluence of the Salkehatchie and Little Salkehatchie rivers near the Islandton community of Colleton County, South Carolina. Part of its lower drainage basin combines with the Ashepoo River and the Edisto River to form the ACE Basin. The Combahee empties into Saint Helena Sound near Beaufort, which in turn empties into the Atlantic Ocean.

Knights of Wise Men Lodge is a historic clubhouse located on Saint Helena Island near Frogmore, Beaufort County, South Carolina. It was built about 1942, and is a simple, two-story, rectangular cinder block building with a gabled roof. It features a symmetrical, elaborate stepped façade. It was designed by the Lodge brothers and built by local masons, and is located at the rear of The Green. On holidays, the hall was used both as a dance hall and a jail.It was listed in the National Register of Historic Places in 1996.

Saint Helena Sound is a coastal inlet in the Lowcountry region of South Carolina, located along the Atlantic Ocean between Beaufort and Colleton counties. Located within the relatively undeveloped ACE Basin, the sound consists of the mouths of the Ashepoo, Combahee, and the south branch of the Edisto rivers, of which the ACE moniker derives from. The inlet is located 15-mile (24 km)east of Beaufort, between Edisto Island and Hunting Island. At its widest point, Saint Helena Sound is 7.5-mile (12.1 km) across. The Intracoastal Waterway crosses the sound. Much of the land surrounding St. Helena Sound has been preserved through the St. Helena Sound Heritage Preserve and the larger ACE Basin project.

The St. Helena Sound Heritage Preserve is a collection of Sea Islands totaling 10,301 acres (41.69 km2) of upland and wetland property located along the Saint Helena Sound in the Lowcountry region of South Carolina. Owned and managed by the South Carolina Department of Natural Resources (SCDNR), the preserve is also considered to be a designated Wildlife Management Area and a portion of the ACE Basin area. Listed below are properties that consist of the preserve: Otter Island (1,899 acres (7.68 km2)) Ashe Island (1,722 acres (6.97 km2)) Beet Island (1,685 acres (6.82 km2)) Big/Warren Islands ((2,241 acres (9.07 km2)) South Williman Island ((2,764 acres (11.19 km2))

Dr. York Bailey House, also known as the Sara Rhodan House, is a historic home located on Saint Helena Island near Frogmore, Beaufort County, South Carolina. It was built about 1915, and is a two-story, vernacular frame American Foursquare style dwelling. It was built for Dr. York W. Bailey (1881-1971), a prominent native of the island who was St. Helena's first African-American doctor and only resident physician for over 50 years. He lived in this house until his death in 1971. The York W. Bailey Cultural Center and Museum at Penn Community Center is named for him.The house was from a mail order catalogue.It was listed in the National Register of Historic Places in 1988.

The Corner Packing Shed, in Frogmore, South Carolina, is a historic packing house on St. Helena Island that was built in 1930. It was listed on the National Register of Historic Places in 1988.

Harbor Island is a small residential island located 14 miles (22 km) east of Beaufort, South Carolina. It is one of the Carolina Sea Islands. The swing drawbridge has been replaced by a fixed high level bridge, Harbor River Bridge, that connects the island to Saint Helena Island towards the west. A small causeway crossing Johnson Creek connects Harbor Island with Hunting Island towards the south. The majority of the island is tidal marsh, though approximately 800 acres (3.2 km2) of upland acreage exist on the northeastern portions of the island. The residential portion of the island was listed as a census-designated place in the 2020 census with a population of 209.