My Excel file has "disappeared". I can open the file but nothing appears when I do.

I have used this file extensively for months. I inadvertently clicked something this morning that made the file "disappear". I can see the file in its folder and open it. But, once opened, I do not see any of the tabs and the name of the file does not appear at the top. I did ALT F11 and can see the tabs in the VBA but I'm missing a step to make the tabs reappear. Since I don't know what I did to make everything disappear, I have no clue how to bring everything back.