The Iowa State Capitol is the seat of state government in Des Moines, a limestone building topped by a 275-foot gold-leafed dome that has housed the legislature, the governor, and other state offices since its dedication in 1884.1Iowa Legislature. Iowa State Capitol Visitor Guide Construction began in 1871 from a design by John Cochran and Alfred Piquenard and took fifteen years to finish. The building is open to the public most of the week and remains one of the most recognizable landmarks in the state.
Where It Is
The capitol sits on a rise east of downtown Des Moines known as Capitol Hill, overlooking the skyline and bordering the East Village neighborhood. The surrounding grounds work as a public park, with walking paths, monuments, and open lawns. The Des Moines Area Regional Transit Authority (DART) runs a bus line along Grand Avenue on the north side of the building, and designated visitor parking lots are marked in green on the complex map.2Iowa Department of Public Safety. Capitol Complex Parking and Building Access
The Building and Its Golden Dome
The capitol follows a Modified Renaissance design with a distinctive five-dome silhouette: one massive central dome flanked by four smaller corner domes. The central dome is covered in 23-karat gold leaf so thin that 250,000 sheets pressed together would measure a single inch.3Iowa Legislature. Pieces of Iowa’s Past – Gilding the Capitol Dome The four smaller domes were re-gilded with 23.75-karat leaf as recently as 2023.
Iowa weather wears the gold down over time, so the central dome has to be re-covered roughly every 30 to 35 years. The last full re-gilding was completed in 1999, which means the next one is likely sometime in the 2030s.4Iowa PBS. History and Maintenance of Iowa Capitol Building’s Golden Dome
The exterior walls are built from locally quarried Iowa limestone on a granite foundation, with Corinthian columns and stone carvings framing the entrances. The limestone has held up for more than 140 years and still defines the building’s character.
What’s Inside
The “Westward” Mural
Painted on the wall above the Grand Staircase on the east side of the building, Edwin H. Blashfield’s mural “Westward” is the capitol’s most celebrated piece of art. Blashfield described it as “a symbolical presentation of the Pioneers led by the spirits of Civilization and Enlightenment to the conquest by cultivation of the Great West.”5Iowa Legislature. Westward Mural A prairie schooner drawn by oxen sits at the center, with a pioneer family walking alongside and allegorical female figures carrying a shield with Iowa’s state arms, a book representing enlightenment, and seeds representing the shift from wilderness to farmland. Behind the wagon, two more figures hold models of a steam engine and an electric dynamo.6Iowa Legislature. Edwin H. Blashfield’s Description of His Mural
The Law Library
The Iowa State Law Library is one of the most visually striking rooms in any American statehouse. The space rises through multiple balcony levels connected by spiral staircases on both sides, with gilded iron railings, stained-glass skylights installed in 1884, and encaustic tile floors. Thousands of legal volumes line the shelves, and the room is open to the public.
The Civil War Battle Flag Collection
The capitol holds the colors carried by more than 76,000 Iowa men during the Civil War. The flags were paraded through Des Moines to the Capitol on August 10, 1894 (proclaimed “Battle Flag Day”) and placed in wood and glass cases on the second floor; after the 1904 fire they moved to glass-fronted niches around the first-floor rotunda.7Iowa Legislature. Pieces of Iowa’s Past – Capitol Interior Restoration and Battle Flag Preservation A 2000 preservation study led the state to appropriate roughly $2 million to clean the fragile fabric and store the flags flat in climate-controlled conditions at the Iowa Historical Society Museum. Iowa law still requires part of the collection to remain on display at the Capitol, so one retrofitted case in the rotunda shows a single flag at a time on a rotating basis.
Who Works in the Building
Both chambers of the Iowa General Assembly, the Senate and the House of Representatives, meet in the capitol to debate and vote on state laws during the annual legislative session.8Iowa Legislature. 91st Iowa General Assembly Session Timetable The Governor’s office is on the first floor and doubles as a ceremonial space for greeting dignitaries and holding bill signings. Other constitutional officers keep offices in the building as well, including the Secretary of State (whose office displays the original Iowa Constitution) and the State Auditor.9The Iowa Legislature. Capitol Today
The 1904 Fire
On the morning of January 4, 1904, a fire broke out behind the House Chamber after an electrician left a candle burning while running wires through the walls. The alarm went up around 10 a.m. and firefighters did not bring the blaze under control until roughly 6 p.m. An engineer named Crampton Linley is credited with saving the building by crawling through attic spaces and closing fire doors between the wings.10Iowa Legislature. The Iowa State Capitol Fire – 1904
The House Chamber ceiling collapsed, and the Law Library, old Supreme Court Room, and old Agriculture offices all took smoke and water damage. Elmer Garnsey, who had originally decorated the interior, returned to redo the damaged rooms, and his updated style still looks noticeably different from the rest of the capitol. Recent renovation work has turned up charred timbers in the north attic and pooled lead solder at the base of the northwest dome, physical traces of the fire still inside the walls.
Grounds and Monuments
The grounds hold more than a dozen monuments and memorials spanning Iowa history from the Civil War through the 20th century. The World War II Memorial Plaza, dedicated in 1997, features a 50-foot stainless steel “Freedom Flame” and incorporates a Pearl Harbor memorial. A 2,000-pound Liberty Bell replica, cast in France, was presented to Iowa in 1950 by the U.S. Department of the Treasury for the state’s war-bond efforts. The Allison Monument, erected in 1917, honors Senator William B. Allison, who served in Congress for 43 years.11The Iowa Legislature. Capitol Grounds Near the Judicial Building, the Shattering Silence sculpture, completed in 2009, commemorates an 1839 Iowa Territorial Supreme Court ruling that prevented a slave named Ralph Montgomery from being extradited to Missouri.
Visiting Hours and Access
The capitol is open Monday through Friday from 8 a.m. to 5 p.m. (doors lock at 4:45 p.m.) and Saturday from 8 a.m. to 4 p.m. It is closed on Sunday. Self-guided and guided tours are both free, though guided tours require a group of ten or more.12Iowa.gov. Visit the Iowa State Capitol Visitor parking lots are marked in green on the complex map, with accessible parking near each building and overflow in numbered lots 3, 4, 5, and 16. Parking is tighter when the legislature is in session from January through early May, so leave extra time during those months.2Iowa Department of Public Safety. Capitol Complex Parking and Building Access