Captain Henry Sewall moved to Florida in 1889 and built his home at the tip of the peninsula that became Sewall's Point. When the local pioneer and developer became the first postmaster in 1891, he established the Sewall's Point Post Office in his home. Captain Sewall and his wife Abbie lived in the framed vernacular house until 1910 and in 2006, the house was moved by barge to Indian RiverSide Park.

Dive to see the wreck of the Georges Saint Valentine, Martin County’s only underwater archaeological preserve and an underwater site on the National Register of historic places. Georges Valentine is a pleasure to dive or snorkel because she rests in shallow water, only 100 yards offshore. Visitors can park at the House of Refuge and walk to the entry point, a rocky outcropping l00 yards south. Contact the House of Refuge for more information.

The Golden Gate Building was built in 1925 and is one of Martin County's most distinctive historical structures. The two-story trapezoidal building was designed in the Mission Mediterranean Revival style. The building originally served as the office for the Golden Gate Development Co. In 1926, the post office for Port Sewall moved in and when Port Sewall incorporated in 1927, the building became the town hall. Following the dissolution of the Golden Gate Development Company in 1940, the building was sold to the Church of God at Port Sewall. In 1952, it became the residence of renowned artist James Hutchinson and his family. Martin County leased the building to House of Hope Inc., who managed the interior finishing. The building was transformed into the Golden Gate Center for Enrichment. The Golden Gate Building was listed on the Martin County Register of Historic Places in 2006 and the National Register of Historic Places in 2017.

Construction of the Historic Log Cabin began in 1935 as one of President Roosevelt's New Deal Works Progress Administration (WPA) Projects. The first recreational activity was a dance in November, 1936. Community and school events, card games and meetings were often held at the log cabin. However, in 1971, $1,000 was paid for the disassembled Log Cabin in order that it might be preserved. After about eight years, with assistance from Vince Bocchino and a crew of workers, the structure was meticulously reassembled in Langford Park in Jensen Beach and was completed by November, 1981. The Log Cabin was listed on the Martin County Register of Historic Places in 2006.

Built in the 1920s as a silent movie house, the Lyric Theatre is listed on the National Register of Historic Places. This grand old theatre represents a colorful history in the community as a central gathering place for young and old alike. The Lyric Theatre seats 500 and features whisper-perfect acoustics. It is host to a variety of events, ranging from classical theatre to rock and country bands, orchestra and jazz concerts, dance recitals, and school programs, as well as movies.

Court House Cultural Center and Gallery is managed by the Arts Council. Serving Stuart and Martin County, the Court House Cultural Center Gallery hosts fine art exhibitions. Designed in the art deco style and built in 1937, as a federal Public Works Administration project, the building was added to the National Register of Historic Places in 1997.

Mount Elizabeth was constructed circa 2000-2499 BC during the Late Archaic Period by Florida Indians who selected the site for a ceremonial shell midden. It was occupied by ancient peoples who first subsisted by hunting large land animals, and then later on a diet of smaller animals and shellfish. Mount Elizabeth is the highest mound in South Florida, presently at 40 ft. above sea level.

The New Monrovia One-Room Schoolhouse was built circa 1930 and was one of the first schools constructed in Martin County to educate African-American children. Its former students fondly remember it as “Mrs. Williams School.” Costella Williams, the distinguished educator and teacher most associated with the One-Room Schoolhouse, taught there until around 1960. It is believed to be the only surviving one-room schoolhouse on the Treasure Coast. The schoolhouse was listed on the Martin County Register of Historic Places in 2012.

The twilight grandeur of the Old South is captured as you pass through grand double French doors into the main lobby. The lobby is adorned with its open fireplace graciously framed with winding staircases to the sitting room above. The nostalgia of an era gone by will sweep over visitors. Be sure to see the historical murals upstairs that recall Indiantown's fascinating history as an important trading post for the Seminole people.

The Stuart Welcome Arch was built in 1926 by the Stuart Chamber of Commerce to celebrate the creation of Martin County, with Stuart as the county seat. The gateway was designed to welcome the many motorists coming to winter in Florida as they entered the City of Stuart. “Atlantic Gateway to the Gulf of Mexico” was placed on the crossbeam because it was anticipated that Stuart would become a prosperous shipping port upon completion of the intra-state canal. In 2004, the Stuart Welcome Arch was officially listed on the National Register of Historic Places and is thought to be the only gateway of its kind spanning over a highway in Florida. In 2006, it was listed on the Martin County Register of Historic Places.

The Olympia School (now called the Apollo School) was built in 1924 as the town hall for the Olympia Development Company. The building was used from 1925 until 1963 as a schoolhouse. In 2000, the Apollo School Foundation purchased the building to rehabilitate it and open it for use as a historical museum and cultural arts and educational facility. In 2002, the building was listed on the National Register of Historic Places and is the only building in Hobe Sound to be so named. In 2015, it was listed on the Martin County Register of Historic Places.

The Trapper Nelson Zoo Historic District encompasses an approximately 2.5 acre section of the 875.5 acre Trapper Nelson Interpretive Site, which is a part of Jonathan Dickinson State Park. The historic district is found in the southern part of the state park and contains the principal buildings and other resources that made up the "zoo and museum" owned and operated by Vince "Trapper" Nelson, opened in 1933.

In 1936, Atlanta businessman Willaford Leach and his wife Anne Bates Leach, a Coca Cola heiress, purchased Mt. Elizabeth and the surrounding property and built the Mediterranean Revival-style home that exists today. Set against a backdrop of beautiful sunsets and tropical palm trees, The Mansion at Tuckahoe balances southern elegance with old Florida charm. Located inside Indian RiverSide Park, it offers breathtaking waterfront views overlooking the Indian River Lagoon, and is one of the most historically significant sites in Florida.