Mentioned by 10Best
Learning's Made Fun by D.C. Museums, Parks and Activities
"For those of us lacking a green thumb or ones who can grown anything, the U.S. Botanic Garden is the spot to see an amazing array of living plants from many different areas. Dating back to the 19th century, the museum is divided into three separate sections: the Conservatory showcasing displays and exhibits including jungle, Hawaii and endangered plants, the National Garden highlighting a regional and butterfly garden and Bartholdi Park housing the historic, cast iron fountain."