Mahasthangarh is a very old city in Bangladesh that was built a really long time ago. It was a big and important city where a lot of people used to live and do things like trade, farming, and even art.
Mahasthangarh is also a very special place because many important historical events happened there. For example, some of the oldest coins ever found in Bangladesh were discovered there, and there are even some ancient structures called stupas (big dome-shaped buildings) that are said to be over 2,000 years old!
Today, many people still visit Mahasthangarh to see these ancient structures and learn about the history of Bangladesh. People of all ages can come and explore this special city and feel like they have traveled back in time to see what life was like a very long time ago.