Leave the original in the safe. Carry only small amounts of cash and avoid wearing expensive jewelry and engaging in behaviors that thieves may notice, such as overtipping. Air quality is very poor particularly in the hot summer months resembling the smell of diesel fumes.

Lisbon is generally a very safe European capital, but like any major tourist destination, it requires a level of "street smarts" regarding high-value items. In 2026, the city remains a low-violent-crime environment, but petty theft, such as pickpocketing and "snatch-and-grab" incidents, does occur in crowded areas. It is perfectly safe to wear modest jewelry, such as wedding bands or simple necklaces, while walking through the city. However, wearing flashy, expensive designer watches or large diamond pieces in highly congested tourist spots like the #28 Tram, the Alfama district, or the bustling Praça do Comércio can make you a target for opportunistic thieves. At night, especially in nightlife districts like Bairro Alto or Cais do Sodré, it is advisable to keep valuable jewelry tucked away or left in your hotel's safe. The risk is not necessarily of physical harm, but rather the annoyance of losing a precious item to a quick-handed thief. If you plan to blend in with the locals, you'll notice that Portuguese style is often elegant but understated, so following that lead is a good way to enjoy the city without drawing unwanted attention to your belongings.