United States Custom House (New Orleans)

United States Customhouse (New Orleans)
View of the Custom House on Canal Street, 1892
Location423 Canal St., New Orleans, Louisiana
Coordinates29°57′6.38″N 90°3′58.43″W / 29.9517722°N 90.0662306°W / 29.9517722; -90.0662306
Area2.3 acres (0.93 ha)
Built1881
ArchitectWood, Alexander Thompson; Et al.
Architectural styleEgyptian Revival, Greek Revival
NRHP reference No.74000938
Significant dates
Added to NRHPJuly 17, 1974
Designated NHLDecember 2, 1974

The U.S. Custom House, also known as the Old Post Office and Custom House, is a historic government building at 423 Canal Street in New Orleans, Louisiana. It was designated a National Historic Landmark, receiving this designation in 1974 and noted for its Egyptian Revival columns. Construction on the building, designed to house multiple federal offices and store goods, began in 1848 and didn't finish until 1881 due to redesigns and the American Civil War. The U.S. Customs offices have been located there since the late 19th century.

In 2008, it became home to the Audubon Insectarium, the largest free-standing American museum dedicated to insects.