Ammi Burnham Young was an important 19th century American architect

Architect

An architect is a person trained in the planning, design and oversight of the construction of buildings. To practice architecture means to offer or render services in connection with the design and construction of a building, or group of buildings and the space within the site surrounding the...

 whose commissions transitioned from the Greek Revival to the Neo-Renaissance

Neo-Renaissance

Renaissance Revival is an all-encompassing designation that covers many 19th century architectural revival styles which were neither Grecian nor Gothic but which instead drew inspiration from a wide range of classicizing Italian modes...

 styles. His Second Vermont State House

Vermont State House

The Vermont State House, located in Montpelier, is the state capitol of Vermont and the seat of the Vermont General Assembly. The current Greek Revival structure is the third building on the same site to be used as the State House...

 brought him fame and success, which eventually led him to become the first Supervising Architect

Office of the Supervising Architect

The Office of the Supervising Architect was an agency of the United States Treasury Department that designed federal government buildings from 1852 to 1939....

 of the U.S. Treasury Department. As federal architect, he was responsible for creating across the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 numerous custom house

Custom House

A custom house or customs house was a building housing the offices for the government officials who processed the paperwork for the import and export of goods into and out of a country. Customs officials also collected customs duty on imported goods....

s, post office

Post office

A post office is a facility forming part of a postal system for the posting, receipt, sorting, handling, transmission or delivery of mail.Post offices offer mail-related services such as post office boxes, postage and packaging supplies...

s, courthouse

Courthouse

A courthouse is a building that is home to a local court of law and often the regional county government as well, although this is not the case in some larger cities. The term is common in North America. In most other English speaking countries, buildings which house courts of law are simply...

s and hospital

Hospital

A hospital is a health care institution providing patient treatment by specialized staff and equipment. Hospitals often, but not always, provide for inpatient care or longer-term patient stays....

s, many of which are today on the National Register

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...

.