I think Hold the gates is going to return at the Museum as it seems to be deceased.
In the future you can buy an artifact in the souvenirs shop at the museum in different sizes. HTG large will maybe give you a lot of extras as HTG tiny gives maybe much less. You place the artifact in your city in the corner where you just chopped the new forest planted there for extra space for all artifacts to come.
I’m also frustrated about this and I would like to have a refund for all the crowns I’ve spend for Hold the gates. Also Please give me something in return for all the workers spending weeks to getting me Hold the gates . I’ve put them to work for nothing!
After the refund you could move Hold the gates to the museum.
Thank you
Tijsijs