Apr 17, 2025 - History

420's origins: A treasure hunt, secret code and dueling legends

Add Axios as your preferred source to

see more of our stories on Google.

Photo of a person wearing a headband with the marijuana plant smoking

A person blows smoke after taking a hit from a bong during a 420 Day celebration on Hippie Hill in Golden Gate Park. Photo: Justin Sullivan via Getty Images

More San Francisco stories