The St. Charles Historic District in St. Charles, Missouri was listed on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

 in 1970. In 1970 it included 63 contributing buildings over a 47 acres (19 ha) area.The district was later increased three times.
The original listing included the separately NRHP-listed First Missouri State Capitol Buildings and the Newbill-McElhiney House.

In 1987 the district was increased to include a Greek Revival

Greek Revival architecture

The Greek Revival was an architectural movement of the late 18th and early 19th centuries, predominantly in Northern Europe and the United States. A product of Hellenism, it may be looked upon as the last phase in the development of Neoclassical architecture...

 specialty store building at 1000 S. Main St., with a 1.3 acre (0.5260918 ha) area.
In 1991 the district was increased by 3.1 acres (1.3 ha) to include 13 more contributing buildings, including work by architects William D. Parsons and H.C. Bode. This included the St. Charles Odd Fellows Hall

St. Charles Odd Fellows Hall

The St. Charles Odd Fellows Hall in St. Charles, Missouri, is a Second Empire-styled building that was built in 1878. It was listed on the National Register of Historic Places in 1987. It served historically as a clubhouse, as an auditorium, and as a financial institution.It is included in the...

, the Old City Hall, a post office, and other buildings in Late 19th and 20th Century Revivals, Greek Revival, Late Victorian architectural styles.

In 1996 the district was further increased by 9 acres (3.6 ha) to include 41 more contributing buildings. on the 100, 200, and 300 blocks of N. Main St. These include Greek Revival, Italianate

Italianate architecture

The Italianate style of architecture was a distinct 19th-century phase in the history of Classical architecture. In the Italianate style, the models and architectural vocabulary of 16th-century Italian Renaissance architecture, which had served as inspiration for both Palladianism and...

, and Late 19th and 20th Century Revivals architecture including work by architects Albert B. Groves

Albert B. Groves

Albert Bartleton Groves, also known as A.B. Groves or Albert B. Groves, was an American architect who practised in the St. Louis, Missouri area. He practised partly as part of a partnership, Weber & Groves. Buildings designed by Grove which survive and are listed on the U.S...

 and Frank & Adolph Haverkamp.