Located in Northern Portugal, Porto is known for its delectable seafood, stunning views of the Douro River, and fair prices. Porto is Portugal's second largest city and is home to around 300,000 people. Founded in 1123, Porto is one of the oldest cities in Europe making for old cathedrals, historic museums, and more. Read on to discover the beauty and magic of Porto, Portugal in this guide to Porto. This post is all about your Ultimate Guide To Porto.