This is the 6275th most frequent Russian word.
улицам
"Улицам" means "to the streets" (dative plural form of "улица" – street).
Here, "улицам" is in the dative plural form and indicates the location or area where the action of walking occurs.
Я люблю гулять по улицам города вечером.
I love walking through the streets of the city in the evening.
In this sentence, "улицам" is in the dative plural form and is used to express the requirement or necessity directed towards the streets for repair.
Старым улицам нашего района нужен ремонт.
The old streets of our district need repair.
Here, "улицам" is in the dative plural form and conveys an indirect object that causes or fosters the feeling of joy.