Throughout Burma's history, its had a number of different capitals. Some for as little as a year and others for hundreds of years. Why, even today, for those that even are familiar with the country, I wouldn't be surprised if most of them named Yangon as the capital, even though it ceased being the capital over 10 years ago. For those currently unsure, Naypyidaw, in the middle of the dense Burmese jungle, is the current capital.
For roughly half of the past 700 hundred years though, Ava (Inwa) has been the capital of Burma. That wasn't all in one shot though. To be fair, it's a little more complicated than that as there is some overlap amongst capitals based on the state of Burma at any given time and who controlled how much of the region.
Today, you can find some nice remaining temples and pagodas in Ava, located not far from Mandalay.