Those interested in the history of keeping infectious diseases out of the country will enjoy this.
I used to sail to Angel Island from Emeryville or from the Navy's marina at Treasure Island. It was a fascinating place and provided a wonderful opportunity to take a shaded walk all around the island from Ayala Cove to the Immigration Station, the Nike Battery and the various Civil War batteries. I heard, after I left the Bay Area, that the good people there decided to cut down all the trees because they were non-native Eucalyptus trees.
I had thought to include a video since several are on offer at ourtube but they don't discuss the Quarantine issue and refer solely to Angel Island's role as the Ellis Island of the West.