The CSS (Central Superior Services) exams in Pakistan are conducted in multiple cities across the country. The Federal Public Service Commission (FPSC), which is responsible for organizing the CSS exams, designates examination centers in various cities to accommodate candidates from different regions.

While the specific list of examination centers may vary from year to year, here are some cities that have historically been designated as CSS exam centers:

1. Islamabad
2. Lahore
3. Karachi
4. Peshawar
5. Quetta
6. Rawalpindi
7. Multan
8. Faisalabad
9. Hyderabad
10. Abbottabad
11. Dera Ghazi Khan
12. Bahawalpur
13. Sukkur
14. Gilgit
15. Muzaffarabad

Please note that the availability of examination centers and the specific cities chosen as centers may be subject to change.