Washington botanic park

Le Jardin Botanique des États-Unis (United States Botanic Garden) est un jardin botanique dirigé par le Congrès des États-Unis (Congress of the United States). Il se trouve à Washington D.C., sur les terrains du Capitole près du Garfield Circle. Le bâtiment est divisé en plusieurs salles qui présentent chacune un climat différent.(La suite sur Wikipedia. )

The United States Botanic Garden (USBG) is a botanic garden on the grounds of the United States Capitol in Washington, D.C., near Garfield Circle.
The Botanic Garden is supervised by the Congress through the Architect of the Capitol, who is responsible for maintaining the grounds of the United States Capitol. The USBG is open every day of the year, including federal holidays (except on June 3). It is the oldest continually-operating botanic garden in the United States.(More on Wikipedia)