Trujillo is one of the first Spanish settlements in Peru though the area had been settled for thousands of years previously. The WHS Chan Chan and even more impressive Moche ruins of Huaca del Sol y Luna are just outside of town and we stayed overnight in Trujillo to visit them. 

The center of Trujillo is quite small, maintaining its colonial grid layout and completely encircled by the busy avenida España. It felt and looked much safer and cleaner than the rest of town which still suffers from the typical garbage, crime and traffic problems common to Peru. The centre has a large and busy Plaza de Armas on which you'll find typical 2-storey colonial buildings, many with iron grillwork or wooden balconies (also seen in Lima's historic centre). Along with the cathedral, everything looks relatively recently painted and restored. 5 blocks of Jiron Francisco Pizarro street between Plaza de Armas and Plazuela El Recreo are pedestrianized and if time is limited a walk along this section is sufficient to get the idea. 

Like Els, I don't expect this to make the List. It didn't have any unique outstanding features but it does make a visit to the city nicer than it otherwise could have been.