Fans of the Grateful Dead are pouring into San Francisco for three days of concerts and festivities marking the 60th anniversary of the scruffy jam band that came to embody a city where people wore flowers in their hair and made love,

San Francisco welcomed Grateful Dead offshoot Dead & Co. back Friday night for a hell of a birthday party. The first night of a three-night Grateful Dead 60th anniversary residency took over the Polo Fields of Golden Gate Park,

The stage is set in San Francisco's Golden Gate Park. Deadheads are expected to flock to the city this weekend to enjoy three days of Dead & Company concerts in celebration of the Grateful Dead’s 60th anniversary. This weekend's celebration kicks off three weekends of music festivals and shows at the park.