Mark Twain Memorial Bridge (1936)

Mark Twain Historic District is a national historic district located at Hannibal, Marion County, Missouri. The district encompasses 20 contributing buildings in the central business district of Hannibal. It developed between about 1840 and 1936. Located in the district is the separately listed Mark Twain Boyhood Home. Other notable buildings include the Ice House Theatre (c. 1885), Randall House Antiques (c. 1845), Information Center (c. 1845), House of the Pilasters & Grant's Drug Store (1839-1844), "Becky Thatcher" House (c. 1840s), and the Mark Twain Memorial Lighthouse (1936). It was listed on the National Register of Historic Places in 1978.

North Main Street Historic District is a national historic district located at Hannibal, Marion County, Missouri. The district encompasses 27 contributing buildings in the central business district of Hannibal. It developed between about 1852 and 1935, and includes representative examples of Italianate and Beaux Arts architecture. Notable buildings include the Lone Building (1853), Brown's Drug Store (1858), Old Central Hotel (1868-1874), Old Schultz Furniture Store (c 1863), Original Farmers and Merchants Bank (1876), Jameson Hawkins Row (1852), Bernice Gano Tavern (c. 1935), and A. W. Lamb Building (c. 1870-1875).: 28–37  It was listed on the National Register of Historic Places in 1986.

Bear Creek is a stream in Marion and Ralls counties in the U.S. state of Missouri. It is a tributary of the Mississippi River. The creek enters the Mississippi on the southeast side of Hannibal. Bear Creek was named for the fact bears were hunted there by pioneer citizens.

The Mark Twain Boyhood Home & Museum is located on 206-208 Hill Street, Hannibal, Missouri, on the west bank of the Mississippi River in the United States. It was the home of Samuel Langhorne Clemens, better known as author Mark Twain, from 1844 to 1853. Clemens found the inspiration for many of his stories, including the white picket fence, while living here. It has been open to the public as a museum since 1912, and was designated a National Historic Landmark on December 29, 1962. It is located in the Mark Twain Historic District.

Hafner Grocery Warehouse is a historic commercial warehouse located at Hannibal, Marion County, Missouri. It was built about 1910, and is a three-story brick structure on a concrete foundation. It features seven bays of segmental-arched windows and a corbelled parapet.: 48–49  It was added to the National Register of Historic Places in 1986.

The Mark Twain Memorial Bridge is a bridge over the Mississippi River at Hannibal, Missouri, childhood home of Mark Twain, for whom the bridge is named. The bridge, north of the original bridge, was finished in 2000. The bridge carries traffic for Interstate 72 and U.S. Highway 36. The state of Missouri has put up a stone picture of Twain on the Missouri side of the bridge. The bridge opened to traffic on September 16, 2000. As part of the construction project, U.S. 36 was rerouted farther north, eliminating a dangerous sharp curve that had been on the Missouri approach. The cost of the bridge was $55 million.

Davidson Building was a historic commercial building located at Hannibal, Marion County, Missouri. It was built between 1903 and 1905, and was a two-story Romanesque Revival style building. It had a three-bay rock-faced ashlar facade and party walls. It featured arched windows with radiating voussoirs.: 44–45  It has been demolished. It was added to the National Register of Historic Places in 1986.

Mark Twain Hotel is a historic hotel building located at Hannibal, Marion County, Missouri. It was designed by Barnett, Haynes & Barnett and built in 1905. It is a four-story, Renaissance Revival style steel-frame structure with a granite foundation and beige pressed-brick exterior. The annex was built in 1918. It features semicircular arches over the main door and adjacent windows.: 50–51  It was then added to the National Register of Historic Places in 1986.

Holmes–Dakin Building is a historic commercial building located at Hannibal, Marion County, Missouri. It was built in 1894, and is a two-story brick structure with a coursed rubble foundation and a flat roof. It features a corbelled brick frieze with matching corbelled parapet, capped by a stone molding. It originally housed a cigar factory.: 46–47  It was added to the National Register of Historic Places in 1986.

Broadway District is a national historic district located at Hannibal, Marion County, Missouri. The district encompasses 28 contributing buildings in the central business district of Hannibal. It developed between about 1866 and 1934, and includes representative examples of Italianate, Classical Revival, and Art Deco architecture. Notable buildings include the Lakenan Building (c. 1866), Kresge Building (1931), Second Farmers and Merchants Bank (c. 1910), Sproul-Cash Store (1901), Hannibal Trust Company (1909-1910), Hickman Block (c. 1865), and Robinson Brothers (c. 1894).: 18–27  It was listed on the National Register of Historic Places in 1986.

Standard Printing Company, also known as the Hayward Grocery Company, is a historic commercial building located at Hannibal, Marion County, Missouri. It was built in 1879, and is a three-story, nine bay by ten bay, Italianate style brick structure. It features segmental arched windows, a lavish bracketed and modillioned cornice, and a storefront with intact cornice and iron pilasters.: 38–39  It was added to the National Register of Historic Places in 1986.

Benjamin Horr House, also known as the Standard Printing Company, is a historic home located at Hannibal, Marion County, Missouri. It was built about 1855, and is a two-story, vernacular Greek Revival style brick structure. It has a front gable roof with cornice. It is the earliest surviving building to have been used for education in Hannibal, having once housed a private school run by the family of one of Mark Twain's former schoolteachers.: 40–41  It was added to the National Register of Historic Places in 1986.