Hey kiddo, do you know what an embassy is? It's like a special house where people from one country work and live when they're in another country. They talk to the leaders of that country and help their own people who are visiting or living there.
Now, imagine a whole street full of these special houses. That's what we call embassy row! It's a place in some big cities, like Washington D.C., where a lot of different countries have their embassies all lined up in a row on the same street.
It's kind of like a big neighborhood but instead of regular houses, there are just embassy buildings. So when people visit embassy row, they can walk down the street and see all the different flags and buildings from different countries - pretty cool, huh?