The correct topology is very common. All you need is water and a hill.

We've already tapped most of the suitable places for hydro dams because those need flowing water. Pumped storage does not need flowing water so the number of potential sites is massively larger.

ANU identified 616,000 potential sites: https://re100.eng.anu.edu.au/global/

Maybe if we bulldozed some ski resorts.

https://maps.nrel.gov/psh (us)

Europe has Norway for storage, but limited renewable potential compared to the US or China (not nothing, offshore wind is a thing, but the available land area for solar is very limited).

Many normal hydroelectric dams can be converted, they already have half the setup .

As long as there is a lower reservoir or space for one , any hydroelectric dam could converted to pumped storage without additional ecological impact .

There are some viable places in Europe, but the biggest problem seems to be actually getting all the permits required to build them. One can't just chop the top of a mountain nowadays.

China does not seem to have this problem.

Sweden snd Norway, maybe? Turkey has a lot of potential sites.

I don't think the US has any either, there's a reason they built Tom Sauk (not sure there's any other pretty much entirely artificial PHS).

There might be a few locations in the Alps e.g. existing barrages which could be retrofitted into PHS in Switzerland and Austria (KOPS II was commissioned in 2008).