While planning Milan beyond the Duomo, I found several former private homes now open as museums. I bought a Case Museo Card and visited four house museums — eye-opening in every sense.
The photo shows a design detail at Villa Necchi Campiglio that I found especially striking.
A single adult ticket is usually about €15; the Case Museo Card is about €25 (roughly NT$880) and covers one visit to each of four museums within a year of purchase.
Details and the card: https://casemuseo.it/en/la-card-eng/
