I recently figured out that the University of Washington has a huge medicinal herb garden. There are almost 1000 species of plants from around the world. The herbs displayed in the garden have been used through out history to treat many different ailments and are also used for seasoning, dyeing and in cultural ceremonies.
These images show only a small portion of the garden and I recommend stopping by for a visit. It is located just off the Burke Gilman trail, on the south end of the campus, across from the medical school.