Cities change at night. Sometimes for the worse, but sometimes for the better. Often you have to search for the highlights. Paris comes alive at night with lights. The Eiffel Tower flashes with glittering golden lights each hour and some of the other wonders of Paris shine when the Sun goes down. We only made it out around the city once after dark to do some photography work. The other evenings fine cuisine and French wine made it impossible to think about anything except hailing a taxi without demonstrating how tasty that wine was after a third or fourth glass.
Obviously being safe when you’re traveling is of primary importance, but if you can, get out and explore your temporary home after dusk. Some of the wonders seen during the day are quite beautiful and very different after dark.