This is the 5307th most frequent Portuguese word.
raramente
Rarely.
In this sentence, 'raramente' is used as an adverb to describe the frequency of the verb (visiting museums).
Eu raramente visito museus.
I rarely visit museums.
Here, 'raramente' modifies 'vista', indicating how seldom the described action occurs.
Ela é raramente vista fora de casa.
She is rarely seen outside the house.
The adverb 'raramente' in this case quantifies how infrequent the situation of having free time occurs.