The desire to visit Treasure Island and Yerba Buena Island had tugged at me for years. I found it fascinating that there were two islands sitting in the bay - one man made and one natural - that were part of the city I lived in. They were close by, yet completely unfamiliar. My birthday in December provided the perfect opportunity to finally explore the two islands. My dad and his wife were in town from LA, and after numerous visits to San Francisco, they were excited to see something new. At a happy hour a few months back, I had met a winemaker from Oro en Paz , and learned that there was wine tasting on Treasure Island. With that as my inspiration, I planned out a birthday itinerary. While you can certainly do this itinerary by car, you can also try it as an urban hike! To do so, check out this map . Here are two hiking options: Yeba Buena Loop: 1.5 miles ( red ) = 1.5 miles Treasure Island Loop: ( blue ) = 2.75 miles You can combine the Yerba Buena Loop wi...