The National Park Service maintains a Tulip Library nearby. Well, 'maintains,' is a matter of opinion. The area consists of about 100 beds of different tulips. It helps gardeners get a good idea of what different varieties look like, as well as their bloom times. In the past, a photocopy sheet with a map listing the varieties was available from a nearby box. This year, only an empty box stood, presumably a victim of budget cuts. There are no tags or markers in the different beds, leaving one to guess what varieties are planted. I found a map online when I got home.
Afterwards, my feet carried me to a few nearby Smithsonian museums. The courtyard around the Sackler Gallery was in full bloom with fritillaria, thousands of purple hyacinths, saucer magnolias, and a weeping cherry.