Key Facts
- ✓ Maryland's State House is the oldest capitol in continuous legislative use in the US, built in 1779
- ✓ Louisiana's Capitol is the tallest at 450 feet with 34 floors, built between 1930 and 1932
- ✓ Colorado's dome is covered in real gold leaf donated by gold miners from the 1858-1861 Gold Rush
- ✓ Nebraska is the only state with a unicameral legislature, meaning it has just one chamber
- ✓ Kansas' dome features a bronze statue of a Kansa warrior, the tribe that gave the state its name
Quick Summary
Every US state has a capitol building that houses its legislature, with many featuring domed designs similar to the US Capitol in Washington, DC. These structures vary significantly in style, age, and historical significance. Maryland's State House holds the distinction of being the oldest capitol in continuous legislative use, while Louisiana's Capitol stands as the tallest at 450 feet. Several buildings feature unique nods to their state's identity, such as Kansas' statue of a Kansa warrior atop its dome and Colorado's gold leaf dome commemorating the Gold Rush. Some capitols, like Arizona's, have been converted into museums, while others, such as Alaska's, face ongoing debates about relocation. The buildings often incorporate local materials and artistic elements that reflect each state's heritage, from Connecticut's six pairs of statues representing various sectors to New Mexico's unique round design inspired by the Zia sun symbol.
Historical Foundations and Regional Significance
State capitol buildings serve as architectural embodiments of each state's history and governmental identity. Maryland's State House stands as the oldest capitol in continuous legislative use in the United States, constructed in 1779. It holds the additional distinction of being the only state capitol to have served as the US Capitol, hosting the Continental Congress from 1783 to 1784.
The Alabama State Capitol in Montgomery marks a pivotal moment in American history as the site where the Confederacy began. A brass star on one of the porticos marks the exact spot where Jefferson Davis was sworn in as Confederate president. The current structure was built in 1851 following a fire that destroyed the original building in 1849. The grounds feature the Avenue of Flags, dedicated in 1968, displaying the flag of every state alongside a native rock from each state at the base of each flag.
Several capitols reflect their state's unique circumstances. Alaska's Capitol in Juneau, completed in 1931, resembles a standard office building with marble columns but lacks a dome. The location was chosen because residents had to fund construction themselves, making it unpopular with locals. Despite a vote in the 1970s to move the capital and a 2022 bill proposing relocation to Willow, Juneau remains the capital.
Arizona's Capitol, dedicated in 1901, ceased housing legislative branches in 1960. By 1978, all government officials had moved to the Capitol Complex, and the original building became a museum.
"In this great State Capitol there are no doors at the grand entrances which open toward the mountains and toward the sea. There is no roof or dome to separate its vast inner court from the heavens and from the same eternal stars which guided the first voyagers to the primeval beauty of these shores."
— John A. Burns, Former Governor of Hawaii
Architectural Design and Construction
Construction timelines for state capitols varied dramatically, reflecting the complexity and resources required for these monumental projects. Arkansas' Capitol took 16 years to complete, with construction spanning from 1899 to 1915. Architects George R. Mann and Cass Gilbert designed the building, which replaced the former State House, now the Old State House Museum.
California's Capitol was constructed between 1860 and 1874, designed by Reuben S. Clark. The building's design was based on the US Capitol in Washington, DC, among other notable American structures. It has been designated a California Historical Landmark since 1974 and sits within 40-acre Capitol Park containing trees from around the world, a World Peace Rose Garden, and the Civil War Memorial Grove.
The Colorado Capitol, completed in 1901, features a distinctive gold leaf dome donated by gold miners to commemorate the Colorado Gold Rush of 1858-1861. Connecticut's Capitol, the state's third since the American Revolution, opened in 1879. Designed by Richard M. Upjohn, its golden dome is surrounded by six pairs of statues representing agriculture, commerce, education, law, force and war, science and justice, and music.
Delaware's Legislative Hall, dedicated in 1933, was designed by E. William Martin in the Colonial Revival style. It replaced the Old State House, which stands opposite the Hall on the capitol mall.
Unique Features and State Identity
Many capitols incorporate distinctive elements that reflect their state's identity and resources. Kansas' Capitol dome features a bronze statue called "Ad astra" depicting a warrior from the Kansa tribe, which gave the state its name. The building took 37 years to construct, from 1866 to 1903.
Massachusetts' State House, built in 1789, originally had a wooden dome covered in copper by Paul Revere's company in 1802. The building sits on land formerly owned by John Hancock, Massachusetts' first elected governor.
Michigan's Capitol, dedicated in 1879, features limestone floors containing visible fossils. Minnesota's Capitol boasts the second-largest self-supporting marble dome in the world, surpassed only by St. Peter's Basilica. Architect Cass Gilbert insisted on Georgia marble, and as a compromise, the contractor leased the quarry so Minnesotans could perform the work.
Mississippi's Capitol, built between 1901 and 1903 on the site of an old state penitentiary, spans 171,000 square feet and features 4,750 original electric light fixtures. Nebraska's Capitol is unique for housing the only unicameral legislature among all states, meaning it has just one chamber.
Modern Structures and Contemporary Significance
Several capitols represent modern architectural movements. Louisiana's Capitol, built between 1930 and 1932, is the tallest in the country at 450 feet with 34 floors. It is one of nine US capitols without a dome and was spearheaded by controversial Senator Huey P. Long, who was assassinated before its dedication.
Florida's New Capitol, built in 1977, features a 22-story central tower designed in an international style. It stands directly in front of the restored Old Capitol, which now serves as the Florida Historic Capitol Museum. Hawaii's Capitol, dedicated in 1969, was designed without doors at grand entrances and features no roof or dome, symbolizing openness. A reflecting pool surrounds the building to represent the Pacific Ocean.
Oklahoma's Capitol, built in 1917, went without a dome for decades due to funding constraints until one was added in 2002. The grounds had active oil rigs until 1986. West Virginia's Capitol, completed in 1932, stands 293 feet tall—five feet higher than the US Capitol.
Wisconsin's Capitol features the only granite dome in the United States, topped with a gilded bronze statue named "Wisconsin" by Daniel Chester French. Wyoming's Capitol, constructed between 1886 and 1890 in Renaissance Revival style, is one of 20 state capitols designated as a National Historic Landmark.


