Breakdown of A ustedes les gusta visitar el museo de arte.
de
from / of
ustedes
you (plural)
el museo
the museum
a
to
Questions & Answers about A ustedes les gusta visitar el museo de arte.
Why is it gusta and not gustan if ustedes is plural?
With verbs like gustar, the verb changes based on the thing being liked, not the person who likes it. Here, the thing being liked is an action: visitar (to visit). When you like doing an action, you always use the singular form, gusta.
Why do we use both a ustedes and les?
Sentences with gustar require an indirect object pronoun, which is les here. Because les can mean "to them" or "to you all", Spanish speakers often add a ustedes at the beginning to clarify exactly who they mean.
Why is it el museo de arte instead of el arte museo?
Why does the sentence use visitar instead of visitan?
When you talk about liking to do something, the action verb stays in its basic, unchanged dictionary form (the infinitive). Because it follows gusta, visitar simply means "to visit" and doesn't need to match ustedes.