Be aware that you're likely to encounter some beggars in the metro, train and outside some stations. Also, I've noticed some beggars in the Rossio square - so if you sit at a table outside a cafe, they'll probably approach you. If anybody approaches you at night or in a deserted area, think twice before picking your wallet.
Lisbon is still one of Europe's safest capitals, but as in any other capital city, be aware of petty crime. Pickpocketing is rather common in the most popular trams such as the 28. However, with common sense you should have a trouble-free visit.
A common harmless annoyance downtown (especially in Rua Augusta, Rossio, and Comercio Square) is being constantly approached by Gypsy or Moroccan immigrants trying to sell you sunglasses and then drugs. They can be annoying, but they are harmless. They go away when you show no interest and say no.
I can't tell you how many times we were offered drugs in Lisbon. More than any other city in Europe that we visited. I didn't think we looked like the type that does drugs, but maybe it was just because we are American. We also had people trying to sell us sunglasses, and they wouldn't leave us alone. Just try your best to avoid these people selling things on the streets because they are a real annoyance.
While walking around Lisbon, I was amazed how often people approached me to try and sell me drugs. They seemed to come in waves, as I got rid of one another was approaching. I have heard from other travellers similar experiences.
Avoid to stay stoped at the corners of Teatro D. Maria building, in Rossio. You will noticed large concentrations of ethnical groups from africa, and as soon as they spot you they will come to sell drugs. Some tourists robbed time to time, or undercover police could come and you're in a trouble. However you should not avoid Rossio it's a safe place during daytime, just don't stay on this corners for long time. Because this is a high tourist concentration area, expect to have a lot of beggers bugging you for money. Stay alert.
As a tourist you are an easy target for drug dealers who will offer you stuff on the street.
Many people will try and sell you goods, some of it is so obviously stolen,just say no,(preferably in Portuguese!)
Often you'll see women with children. Sometimes the children are drugged to make them sleep while the women ask for money.
As in all big cities,be aware of who's around you ,of pickpockets and enjoy this beautiful city. Despite this caution, I still feel this is a very safe city compared to London.
You should avoid this area of the city. It's located in the middle of Avenida Almirante Reis nad it's a really dirty zone in all aspects that you could imagine - drug dealers, prostitution, ethnic confrontation. Also is, in my opinion, one of the ugliest places in the city. Don't waste your time going there.
Well, on Baixa area(Lisboa) there are drug-dealers on the shopping streets. First they try to sell you sunglasses(even you are wering a pair of them...). If you`re not interested, they offer you hash/marijuana/coke.
Take a chance?
Not recommended. I am not sure is this a warning or a tip...
You’ll get offered lots of drugs. We were there before the relaxation of the drug laws and found that the pushers all went through the same weird ritual. They would offer you a tablecloth, and then a piece of gold jewellery, and then if you didn’t want any of those the drugs would come out. Just walk away.
not just in Lisbon you will find several people trying to help you to park your car. There isn't any special danger but you must be careful with two things. Give them a coin (0.5 Euros - 50 cents) and see if they indicates you a nice place to park the car. They will say every place is ok...just watch the signs.
There are loads of people trying to sell you sunglasses. If you don'y buy sunglasses they will try and sell you hash. Beware, the police are lurking round the corner and have employed these people to trap unsuspecting tourists.
Lisbon is a fairly safe city, but be on the lookout for beggars. They tend to drop by while you're eating or drinking. The worst thing I ever saw was this guy sitting on the sidewalk of the Praça des Restauradores. He had this immense tumor covering his entire face -- truly horrible. Then I saw the streetlight catch a little white band running around the back of his head... It was a mask!!! I've got very little patience for this sort of thing.
Above all, though, be on the lookout for mimes, particularly around the Chiado area. These fiends multiply as the night progresses, so be very cautious. Anyone who paints their face and pretends to be inside a box can only be dangerous. *smirk*
Beware of communist revolutionaries and sympathizers! Gosh-I had more hair and less mass back then ;-)