And Lisbon too, as a side bonus tourists love to see old trams going up the hill (in both cities).

Not really. Unless you mean cable cars. But that's not really an alternate to a bus. Pretty sure they're way way way more expensive to maintain

The cable cars are quite different from trams, they hook into a cable under the ground to get "dragged" along, they're not moving under their own power. Makes them quite expensive to construct and operate, and you can hear the cable noises a block away even when there's no cable car nearby.

I mean they're also iconic and loads of fun to ride, but I think there's a reason people don't go installing new cable cars.

They usually do it by tunneling through the hills to keep a lower grade ascent. Only the cable cars go up the really steep hills.