Rbir

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.

Hickey Run is a tributary stream of the Anacostia River in Washington, D.C..

Goshin (Japanese: 護神, "protector of the spirit") is a bonsai created by John Y. Naka. It is a forest planting of eleven Foemina junipers (Juniperus chinensis 'Foemina'), the earliest of which Naka began training into bonsai in 1948. Naka donated it to the National Bonsai Foundation in 1984, to be displayed at the United States National Arboretum; it has been there ever since.

The United Brick Corporation Brick Complex, also known as the New York Avenue Brick Kilns, is an historic industrial site. It is located at 2801 New York Avenue, Northeast, Washington, D.C. within the United States National Arboretum.The kilns are the only remaining brickyards in Washington, D.C..The twelve remaining kilns were expanded in 1927, and are constructed of common brick, lined with fire brick, with vaulted roofs.