On a budget, Jesuit Stairs (Walk of Shame Steps) still earns its price.
Free
A genuinely beautiful piece of Baroque urbanism that's free, central and doubles as a fan pilgrimage spot. The catch is everyone wants the same empty-stairs photo, so you're queuing with selfie-sticks at midday — early morning is when it's both serene and shootable. Two minutes of joy if you keep expectations modest.