The capital of Old Moldavia is Iasi, a four-letter word. Iasi is the largest city in Moldova and the former capital of the Principality of Moldavia. It is located in the historical region of Moldavia, in the northeastern part of Romania. Iasi is one of the oldest cities in Romania, with a history dating back to the 14th century. It is an important cultural, economic, and educational center in Romania, and is home to several universities and museums.