An excellent introduction to historic San Francisco! Order the guidebook online or get a copy at the Tourist Information Office at the Moscone Center. This is near the beginning of the Barbary Coast Trail. Once you find the trail, you’ll see very clear markers – big bronze plaques more than a foot across embedded in the concrete sidewalk – that indicate every turn of the trail. This is a 3.8 mile walk so get your mind (and feet) ready. It will take you three times as long as you think because every stop is worth spending time to read, study and absorb. And there are 15 significant stops along the way. There are plenty of cafes, coffee shops, and restaurants along the path so you could take time off your tour for lunch.