Sadia A.
Google
I recently visited Casa do Infante in Porto, and it was a remarkable experience. This museum is housed in one of the oldest and most historically significant buildings in the city, dating back to 1325. 
What makes it truly special is how layered the history is: the building has served as a royal residence, the city’s customs house, and even the mint over the centuries.  During excavations in the 1990s, they uncovered archaeological remains going as far back as Roman times — including amazing mosaic floors — which are beautifully integrated into the museum exhibits. 
The museum itself is very thoughtfully organized. There are permanent exhibits that tell the story of Infante D. Henrique (Henry the Navigator) — it’s fascinating to see how his legacy is interwoven with Porto’s history and Portugal’s Age of Discoveries.  There’s also a newer space, the “Gabinete do Tempo” (Office of Time), which offers temporary exhibitions that invite you to reflect on different moments in the city’s past.