Take a leader-led orientation walk with your group this morning to get your bearings. One of the best ways to get to know Porto is through its port wine, so you’ll get a chance to test out Portugal’s famed wine on an included wine tasting. Otherwise, the day is free to do as you please. The city's World Heritage-listed Ribeira district is packed with twisting alleys, staircases and baroque churches, and is great to explore on foot. Perhaps check out Livraria Lello is a stunning neo-Gothic bookstore famed for its sweeping crimson staircase, ornate woodwork, and magical atmosphere that feels lifted from a storybook. For a sensational view of the whole town head to the Torre dos Clerigos (Clerigos Tower), or head down Allies Avenue to see the French-inspired buildings. Oh, and in the evening, why not book yourself on a Rio Duoro cruise on one of the historic 'rabelo' boats to see the city from the water.