Unlike many things from the 1967 "Summer of Love," the Haight Ashbury Free Clinic survived.
The clinic, now part of a larger network, still operates out of a second-floor office overlooking Haight Street in San Francisco. A steep wooden staircase leads to a warren of small but airy rooms.
One exam room still has a wall covered by a faded psychedelic mural, featuring a collage of famous rock stars, naked bodies and peace signs.
The decor used to be even more colorful, according to lab manager Pam Olton. She has worked at the Free Clinic for more than 40 years.