Evacuations were made, roads and businesses were closed and some ferry services had to be stopped while experts worked around the clock to defuse the bombs.
Before the Golden Gate Bridge there was a bustling ferry system that ran people and commerce between San Francisco and the Redwood Empire to the north.
A queue of vehicles snakes past the tower, through passport and police checks, before being sorted into 250 lanes lined up in front of six ferry berths.
All scenic areas in the city have been closed and ferry services to Gulangyu Island have been suspended for tourists and are only available to local residents.
One idea is to simply extend the already existing pan-American highway from Yaviza in Panama out to the Caribbean coast through the less delicate ecosystems and establish a ferry link with a row network over in Colombia.
Well, I'm afraid to say the answer is actually c) the island of Tristan da Cunha in the South Atlantic. It has a population of fewer than 300 and it's only accessible by a 6-day voyage by ship from South Africa.