Expensive Restaurant Scam
Be aware that if you are in the most tourist àreas of Lisbon there are some restaurants that are a tourist trap. The restaurant waiters will give you a menu that doesn't have drinks price or the price of the special dishes. Then when you finish your meal you will see something like "250 euros" for a dish. 50 euros for a beer. The worst part is that this is not illegal since you don't ask the price you will have to pay even if you call the police. This is not common but when you go to a restaurant always check the price of everything your order.