This virtual cache is the iconic Fisherman's Wharf sign. Take a picture of yourself (or include something belonging to you - GPS, cachename, Signal) with the background showing the Fisherman's Wharf sign. It would also be nice to know where you are from.
Enjoy your time in San Francisco! 
Virtual Rewards 4.0 - 2024-2025
This Virtual Cache is part of a limited release of Virtuals created between January 17, 2024 and January 17, 2025. Only 4,000 cache owners were given the opportunity to hide a Virtual Cache. Learn more about Virtual Rewards 4.0 on the Geocaching Blog.