Red line takes about 2 1/2 hours. Blue line takes about 1 1/2 hours. Green line (which was running as of March 26th) takes about 45 minutes. You will have a general overview of the city, it's districts, it's lovely attractions and just how many freakin' people come here. I have been here for 3 weeks visiting a friend. I hopped the 3 buses for a 1 day tour to see if there was anything I want to see this last week I am here. I came up with 3 things I gotta see before I leave!
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