Port tasting in Porto is straightforward: you walk into cellars along the Douro river in Vila Nova de Gaia, pay for a flight of three to five pours, and sip your way through ruby, tawny, vintage, and white ports while someone explains the basics. Expect a cool, dim warehouse atmosphere with barrels stacked high; tours usually last 30-45 minutes and end with a tasting. It's low-key rather than fancy - you'll stand or sit at simple tables, and the guides are generally knowledgeable but move groups along at a steady pace. The experience works well whether you're a total beginner or already enjoy fortified wine.
The best time is spring (April-June) or fall (September-October) when it's milder and crowds are thinner. Summers get hot and busy; winter is quieter but some cellars have shorter hours. Expect to pay around €15-35 per person for a standard tasting tour, with premium or vintage options pushing toward €50-70. Skip the big, heavily marketed cellars if you want a calmer visit - smaller producers often give more personal attention. Do try a 20-year-old tawny and a good white port; many people fixate only on ruby and vintage, but the aged tawnies and drier whites are where the real interest lies for most palates.