From San Francisco International Airport:
Take 101 N towards San Francisco.
Merge onto I-280 N towards Port of San Francisco.
Take the exit on the left and merge onto King Street (becomes Embarcadero).
Turn left onto Washington St.
Turn left onto Drumm St.
Turn right onto California St.

From Oakland International Airport:
Follow signs towards I-880 N towards Downtown Oakland.
Merge onto I-880 N towards Downtown Oakland.
Merge onto I-80 W via the exit on the left towards San Francisco/Bay Bridge.
Take the Fremont St. exit.
Turn left onto Fremont St, which becomes Front St.
Turn right onto California St.