Dawson City was the Yukon capital city until 1953 when Whitehorse was designated as the new capital.
Kaliningrad is a city. Cities do not have capitals. It was, however, once the capital city of East Prussia.
Philadelphia
Istambul, the capital city of Turkey
Australia has only ever had one capital city, and that is Canberra. The capital city in 1945 was Canberra, just as it is today. There is a common misconception that Melbourne was once Australia's capital city, but this was never the case.
The capital city of the Philippines is ManilaManila is the capital of the Philippines.
The Mamphis in Egypt was once its capital.
Columbia
Lisbon
Cusco, Peru
Mexico City. In fact, Mexico City is commonly referred to as the Aztec capital.
Yes, every province, as well as every territory, have once city as its capital. There is also a capital for Canada as well.