You're absolutely right. The OP's post is talking about some shia shrine with zero relevance to Christians, which is why you've never heard of it.
It's also the wrong Simon... it's Simon the zealot, not Simon Peter...
In Jabal Amil mountainous region in southern Lebanon on the outskirts of the city of Tyre lies the village of Shamaa where a Christian saint is buried. He is said to be Saint Simon the Zealot or Simon the Cananite one of the 12 apostles of Jesus.
You're absolutely right. The OP's post is talking about some shia shrine with zero relevance to Christians, which is why you've never heard of it.
It's also the wrong Simon... it's Simon the zealot, not Simon Peter...
https://en.shafaqna.com/92596/religious-site-in-lebanon-attracts-shia-muslims-photo/
The shrine: https://atlasislamica.com/shimon-the-prophet-shrine/
The region: https://en.wikipedia.org/wiki/Shamaa
Upvote to cancel unnecessary downvote. You provided valuable information.