Aborenum

The United States National Arboretum is an arboretum in Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service as a division of the Henry A. Wallace Beltsville Agricultural Research Center. It was established in 1927, by an act of Congress after a campaign by USDA Chief Botanist Frederick Vernon Coville.

The National Capitol Columns is a monument in Washington, D.C.'s National Arboretum. It is an arrangement of twenty-two Corinthian columns which were a part of the United States Capitol from 1828 to 1958, placed amid 20 acres (8.1 ha) of open meadow, known as the Ellipse Meadow.

The National Grove of State Trees is an attraction at the United States National Arboretum. The groves are planted on 30 acres (120,000 m²) of rolling terrain celebrate the diversity and importance of trees to all 50 states and the District of Columbia. Each state is represented by a loosely arranged grove of several trees that are spaced widely enough to accommodate their mature dimensions.

Arboretum is a predominantly residential neighborhood located in Northeast Washington, D.C., tucked into the corner of the National Arboretum. The tiny neighborhood is bounded by New York Avenue NE to the north, Bladensburg Road NE to the west, and the National Arboretum to the south and east. The neighborhood includes the apartment community and three blocks of detached homes.