Mi prima y yo queremos visitar el museo en la ciudad.

Mi is the usual possessive adjective placed before the noun: mi prima = my cousin.

Prima mía is possible in Spanish, but it is much less neutral here and sounds more emphatic or stylistically marked. For a simple sentence like this, mi prima is the normal choice.

Because prima means a female cousin, while primo means a male cousin.

So:

• mi prima = my female cousin
• mi primo = my male cousin

The ending -a often marks a feminine noun referring to a person, and -o often marks a masculine one.

Both are understandable, but Mi prima y yo sounds more natural and polite in Spanish. Just like in English, speakers often mention the other person before themselves.

So:

• Mi prima y yo = more natural / polite
• Yo y mi prima = possible, but less preferred in neutral usage

Because Spanish often drops subject pronouns when the verb already makes the subject clear.

Here, queremos already tells you the subject is we. So:

• Mi prima y yo queremos... = natural
• Mi prima y yo nosotros queremos... = unnecessary in most contexts

Spanish uses subject pronouns like yo, tú, nosotros mainly for emphasis, contrast, or clarity.

Queremos is the present tense, nosotros form of querer.

The subject is Mi prima y yo, which means my cousin and I, so the verb must be in the we form.

Conjugation of querer in the present:

• yo quiero
• tú quieres
• él/ella quiere
• nosotros queremos
• vosotros queréis
• ellos/ellas quieren

So Mi prima y yo queremos means my cousin and I want.

Good question. Querer is a stem-changing verb, but the stem change does not happen in the nosotros and vosotros forms in the present tense.

So:

• quiero
• quieres
• quiere
• queremos
• queréis
• quieren

The e → ie change happens in most forms, but not in nosotros or vosotros.

Because after a conjugated verb like queremos, the next verb usually stays in the infinitive.

So:

• queremos visitar = we want to visit
• not queremos visitamos

This pattern is very common in Spanish:

• quiero comer = I want to eat
• vamos a salir = we are going to leave
• prefieren estudiar = they prefer to study

Museo is a masculine singular noun, so it takes the masculine singular definite article el.

• el museo = the museum

In Spanish, nouns usually need an article more often than in English. Also, many nouns ending in -o are masculine, though there are exceptions.

Because en la ciudad means in the city, describing the location of the museum.

So the sentence means they want to visit the museum that is in the city.

If you said a la ciudad, that would usually mean to the city, which suggests movement toward the city, not location inside it.

Compare:

• el museo en la ciudad = the museum in the city
• ir a la ciudad = to go to the city

In this sentence, en la ciudad most naturally describes el museo: the museum in the city.

So the idea is:

• [visitar] [el museo en la ciudad]

It could theoretically be understood more broadly as the place where the visiting happens, but the most natural reading is that it identifies which museum they want to visit.

In most of Spain, a rough pronunciation would be:

mee PREE-ma ee YO keh-REH-mos bee-see-TAR el moo-SEH-o en la thyoo-DAD

A few useful notes:

• y is pronounced like ee here.
• v and b are pronounced very similarly in Spanish.
• In most of Spain, c before i sounds like the th in thin, so ciudad begins with a thyoo- sound.
• museo has three clear vowel sounds: mu-se-o.

Yes, you could, but it changes the meaning slightly or adds extra wording.

• queremos visitar = we want to visit
• queremos ir a visitar = we want to go and visit / we want to go visit

The original sentence is simpler and more direct. Spanish often prefers the shorter version unless the idea of going somewhere is important.