Okay, so imagine a very long time ago, there was a special building in Jerusalem. This building was called the Jerusalem Temple and it was a place where people went to pray and worship. It was a really important place for a certain group of people called the Jews.
Over time, the temple was destroyed multiple times by different armies and people. But even though the temple doesn't exist anymore, there are still things left behind that give us clues about what it was like.
Archaeologists, which are kind of like detectives of the past, have uncovered some of these things. They found big stones that were part of the temple walls and floors. They also found old coins and pottery that people who visited the temple may have used or seen.
These remnants are important because they help us learn more about what the temple was like and what kind of things people did there. It's like putting together a puzzle to figure out the history of the temple.