Degen

This architectural masterpiece is about 400 years old, 

the length of the bridge is 133 meters and the width of the bridge is 12 meters.  

Do you know which country it is in?

Based on the dimensions provided and the age of the bridge, it sounds like you're referring to the Charles Bridge in Prague, Czech Republic. It's indeed a remarkable architectural masterpiece with a rich history dating back around 400 years.

Thank you for your opinion, but this bridge is called Khajo and it is in Isfahan, Iran