Did I lose the Location (aka Place) icon in my Timeline file?

Dear all, this is my first post.
I am working on My first TimeLine file, and I am getting crazy with the item Location, aka Place.
As you may see in the screenshot MyTimeLine, there is no Location/Place icon.
However, if I create a new TimeLine file it is present as expected (As a new user, I cannot upload the screenshot).
Honestly, now my working file is a big one, so I would like to restore the Location icon.

I do really need It. How can I have this item in my working file?
I would really appreciate your help.
Regards,

Pasquale Giorio