Safety in Cascais is ensured by police officers who regularly patrol the popular resort town. In general, Cascais is a peaceful place, and its beaches have been favored by many aristocrats. Despite its status as a satellite town of Lisbon, with all the attendant circumstances of proximity to the metropolis, Cascais is exclusively concentrated in objects of magnificent architecture of the XIX century, and the criminal world bypasses the resort.
But basic safety rules should be observed everywhere. So keep a close eye on your belongings: don't hang bags and cameras on chairs in cafes or restaurants, don't carry wallets and purses in backpacks or back pockets of pants, and don't leave valuables in cars.
Also, always carry a certified copy of your passport - in Portugal, everyone must carry an identity document. You should also be aware that smoking in public places in Portugal carries high fines.
We should be careful in the bedroom neighborhoods of neighboring Lisbon. Especially since drugs can be openly offered to foreign tourists in Portugal's capital. Standard precautions in a foreign country can help travelers avoid unpleasant situations.