Every major tower has a gift shop.

Yes — usually at the top and at the base. Some even have vending machines for small souvenirs if you don’t want to wait in line.

The Eiffel Tower, CN Tower, Tokyo Skytree, all of them. Expect a small markup (you’re paying for the location), but the selection is decent: keychains, magnets, postcards, and the occasional snow globe. If you want something unique, skip the generic stuff and look for a local artist shop nearby instead.

But if you forgot to buy a souvenir and you’re already at the top? Yeah, they’ve got you covered. Just don’t expect bargain prices.