Ohio River Museum

W. P. Snyder Jr., also known as W. H. Clingerman, W. P. Snyder Jr. State Memorial, or J. L. Perry, is a historic towboat moored on the Muskingum River in Marietta, Ohio, at the Ohio River Museum. A National Historic Landmark, she is the only intact, steam-driven sternwheel towboat still on the nation's river system.

The Ohio Company Land Office is one of the original buildings of the city of Marietta, Ohio, United States. The Office is listed individually in the National Register of Historic Places and as a contributing property to the Marietta Historic District. The Land Office was built after Ohio Company of Associates landed at Marietta in 1788. The Office was built at approximately 39°25′16.75″N 81°27′47.25″W. In 1791 the building was moved away from the Muskingum River so it could be protected by the guns of Campus Martius. From this location, Ohio Company surveyors plotted the company's entire purchase in southeastern Ohio, more than 900,000 acres (360,000 ha) in total, under the direction of Rufus Putnam as the company's chief. The building is a simple log structure with a gabled roof, pierced by a single chimney; one window is set into the side, and the front has space for just one window and the main entrance. Its location on a slope permits the slight exposure of the foundation on one side. Smaller elements include shutters for the windows and a pair of steps that provide access to the main entrance. As the oldest extant building anywhere in Ohio, the land office had become the focus of significant attention by the opening years of the twentieth century, with organizations such as Marietta's historical society devoting extensive effort to ensure its preservation.The building is now part of the Campus Martius Museum complex.

The Campus Martius Museum interprets Ohio history. Campus Martius was the second fortification in Marietta, Ohio and the first primarily for civilian defense. The Rufus Putnam House, incorporated in the Museum, is the only remaining part of the fortification. The museum also includes the Ohio Company Land Office. Both are National Register of Historic Places properties. The museum is located a block from the Ohio River Museum.

The Rufus Putnam House, also known as Campus Martius or Campus Martius Museum State Memorial, is a historic building in Marietta, Ohio. It was built as part of the Campus Martius fortification by General Rufus Putnam, during the early settlement of Ohio by the Ohio Company of Associates.The building is listed in the National Register of Historic Places individually, and it is also a contributing property of the Marietta Historic District. The building is the only surviving part of the Campus Martius fortification and has been enclosed inside the Campus Martius Museum building.The house has been called "the most outstanding architectural combination of New England tradition and frontier necessity preserved in Ohio today."

Campus Martius was a defensive fortification at the Marietta, Ohio settlement, and was home to Rufus Putnam, Benjamin Tupper, Arthur St. Clair, and other pioneers from the Ohio Company of Associates during the Northwest Indian War. Major Anselm Tupper was commander of the Campus Martius during the war. Construction began in 1788 and was fully completed in 1791. The Campus Martius was located on the east side of the Muskingum River, and upriver from its confluence with the Ohio River. A firsthand description of the fort is provided in Hildreth's Pioneer History, Campus Martius is the handsomest pile of buildings on this side of the Alleghany mountains, and in a few days will be the strongest fortification in the territory of the United States. It stands on the margin of the elevated plain on which are the remains of the ancient works [mounds], mentioned in my letter of May last, thirty feet above the high bank of the Muskingum, twenty-nine perches distant from the river, and two hundred and seventy-six from the Ohio. It consists of a regular square, having a block house at each angle, eighteen feet square on the ground, and two stories high; the upper story on the outside or face, jutting over the lower one, eighteen inches. These block houses serve as bastions to a regular fortification of four sides. The curtains are composed of dwelling houses two stories high, eighteen feet wide, and of different lengths. The Campus Martius site is now occupied by the Campus Martius Museum. The Rufus Putnam House, part of the original Campus, is enclosed in the museum. Campus Martius was located around 39°25′17″N 81°27′40″W.

The Start Westward Memorial, officially known as the Memorial to the "Start Westward of the United States", also known as the National Start Westward Memorial of The United States or Start Westward Monument, is a 1938 sculpture designed by Gutzon Borglum and located in Muskingum Park in Marietta, Ohio, United States. Borglum agreed to take on the commission at the request of George White, his friend and former Governor of Ohio. It commemorates the westward expansion of the United States, and the sesquicentennial of the establishment of Marietta in 1788. It stands on purpose-designed esplanade designed by Borglum and the architect John Schooley. As the memorial has weathered badly, there are plans to recreate it in bronze, and move the original to a new indoor visitor center.

The Basilica of St. Mary of the Assumption is a Minor Basilica of the Catholic Church located in Marietta, Ohio, United States. It is also a parish church of the Diocese of Steubenville.

The Anchorage is a historical home in the Harmar neighborhood of Marietta, Ohio, United States. Also known as the Putnam Villa, it was built in 1859 by Douglas Putnam for his wife Eliza. Douglas was the great grandson of General Israel Putnam. Douglas' brother, David Putnam, Jr. was the leading abolitionist in Marietta. David was said to frequent the home, leading to the belief the home was used as part of the Underground Railroad although no evidence has been uncovered.In 1894, the Knox family bought the house from the Putnams. The Knox family was involved in boat building and gave the home the name of The Anchorage. From 1960 to 1986 the house was a nursing home. Since 1996, the home has been owned by the Washington County Historical Society.

The Castle is a historic Gothic Revival style home in Marietta, Ohio, USA.Since 1994 it has been operated as museum.

The Marietta Historic District is a historic district in Marietta, Ohio, United States that is listed on the National Register of Historic Places. Among the buildings in the district are ones dating back to 1788, the year in which Marietta was founded as the first white settlement in what is now Ohio. Among its most significant buildings are the Rufus Putnam House and the Ohio Company Land Office, which are also separately listed on the Register.When the district was added to the Register in 1974, it encompassed an area roughly bounded by the Muskingum and Ohio Rivers and Warren, Third, Fifth, and Sixth Streets. In 2001, some of its original boundaries were slightly reduced, but it was also expanded greatly to include an area roughly bounded by Marion, Montgomery, Ohio, Greene, Butler, and Second through Ninth Streets, and the Ohio and Muskingum Rivers. The resulting district encompasses over 900 acres (360 ha) and includes over two thousand contributing properties.The National Register includes properties and districts that are considered historic under any of four criteria: Association with significant events in American history Association with significant historical individuals Well-preserved and historically significant architecture Possibility of yielding archaeological evidenceWhile most properties and districts on the Register qualify under one or two of the criteria, the Marietta Historic District qualifies under all four.

The Washington County Courthouse is located at 205 Putnam Street in Marietta, Ohio. The courthouse is constructed of rusticated stone blocks for the foundation with smooth blocks rising to the roofline. The courthouse is the third for the county. The courthouse was designed and constructed by Samuel Hannaford & Sons, the same architects on the Monroe County Courthouse. The courthouse is included in the Marietta Historic District, which was added to the National Register on December 19, 1974.

The Putnam Street Bridge, also known as the Marietta Bridge, is a historic United States river crossing that connects Marietta, Ohio, with its Fort Harmar district. The original 1880 bridge was the first free crossing of the Muskingum River. The 1913 bridge was a contributing structure to the Harmar Historic District. The bridge crosses the Muskingum, just above its confluence with the Ohio River.