Where/how would you (theoretically) store physical gold?

Speaking theoretically and no personal details what methods and devices eg safes do you use.

I recently told my bank manager I was considering buying some gold and asked about storing it at the bank. The manager almost laughed at the idea and said haven’t heard of any banks providing that service in years. I had no idea it was a laughable proposal.

I contacted a gold seller in the capital city and was told by them a lot of people just bury it.

Both seem unlikely to me, hence the question.