Yo tengo ganas de que paremos en el oeste para ver una bahía famosa y un faro blanco.

Usually, no. In Spanish, the verb already shows the subject, so tengo already means I have / I feel.
So Tengo ganas de que paremos... would be completely natural.

Yo is often added only for emphasis, contrast, or clarity. For example, it can suggest something like:

• As for me, I feel like...
• I personally want us to...

So here, yo is optional, not required.

Tener ganas de is a very common expression meaning:

• to feel like
• to want to
• to be in the mood to
• sometimes to really fancy doing something

It is often more about desire or inclination than plain want.

Examples:

• Tengo ganas de comer. = I feel like eating.
• Tengo ganas de viajar. = I feel like travelling.

In your sentence, tengo ganas de que paremos means the speaker has the desire for us to stop.

Because the subject changes.

• Tengo ganas de parar = I feel like stopping
• Tengo ganas de que paremos = I feel like us stopping / I want us to stop

Spanish often uses this pattern:

• tener ganas de + infinitive when the subject stays the same
• tener ganas de que + subjunctive when a different subject does the action

Here, the first subject is yo and the second is nosotros (hidden inside paremos), so Spanish uses de que + subjunctive.

Because after tener ganas de que, Spanish normally uses the subjunctive.

The subjunctive is used here because the speaker is expressing a wish, desire, or preference about another action.

So:

• paramos = indicative, more like we stop / we are stopping
• paremos = subjunctive, used after expressions of desire like quiero que, espero que, tengo ganas de que

That is why de que paremos is correct.

Paremos is the present subjunctive, first person plural of parar.

Breakdown:

• infinitive: parar
• present subjunctive stem: par-
• ending for nosotros: -emos
• result: paremos

This means that we stop.

A quick comparison:

• paramos = we stop / we stopped
• paremos = that we stop

Grammatically, Spanish treats yo and nosotros as different subjects, even though the speaker is part of the group.

So:

• yo = I
• nosotros = we

Because the subject of the main clause is yo and the subject of the subordinate clause is nosotros, Spanish uses de que + subjunctive:

• Yo tengo ganas de que paremos...

If the exact same subject were doing both actions, you would normally use the infinitive instead:

• Tengo ganas de parar...

Both can exist, but they do not mean exactly the same thing.

• en el oeste = in the west / in the western area
• al oeste = to the west / westward / on the west side of

In your sentence, paremos en el oeste suggests stopping in the western part/area.

If you said al oeste, it would sound more directional or relative, depending on context, for example:

• Está al oeste de Madrid. = It’s west of Madrid.

So en el oeste fits well if you mean a stop in the western region or western part of a place.

Spanish often uses the definite article with compass directions when they function as nouns:

• el norte
• el sur
• el este
• el oeste

So el oeste means the west.

This is very normal in Spanish. English sometimes drops the article in places where Spanish keeps it.

Because the subject of stopping and seeing is the same group: we.

Spanish often uses:

• para + infinitive when the subject is the same
• para que + subjunctive when the subject changes

So here:

• paremos ... para ver = we stop ... to see

That is natural because the people stopping are also the people seeing.

If the subject changed, then para que would be more likely:

• Paramos para que ellos vean el faro. = We stop so that they can see the lighthouse.

In Spanish, adjectives usually come after the noun.

So:

• una bahía famosa = a famous bay
• un faro blanco = a white lighthouse

That is the normal word order.

Sometimes Spanish puts adjectives before the noun, but that often adds a more literary, subjective, or emphatic nuance. In ordinary descriptive language, after-the-noun placement is the default.

Because the articles and adjectives must agree with the noun in gender and number.

• bahía is feminine singular
  
  • una bahía famosa
• faro is masculine singular
  
  • un faro blanco

Agreement works like this:

• una matches feminine singular nouns
• un matches masculine singular nouns
• famosa matches feminine singular
• blanco matches masculine singular

The accent mark shows the stress and also helps show that í-a is pronounced in two syllables:

• ba-hí-a

Without the accent, Spanish pronunciation rules would suggest a different stress pattern.

So the written accent helps you pronounce it correctly.
Bahía has three syllables, not two.

Normally, no.

Compass directions like norte, sur, este, oeste are usually written in lowercase in Spanish unless they are part of a proper name.

So in this sentence:

• en el oeste ✅

But if it were part of an official name, capitalization might appear.

Yes, but the meaning changes slightly.

• Tengo ganas de parar en el oeste... = I feel like stopping in the west...
• Tengo ganas de que paremos en el oeste... = I feel like we should stop in the west / I want us to stop...

The version with parar focuses on my action or desire in a more individual sense.
The version with de que paremos clearly presents it as a group action: us stopping.

So the original sentence is better if the speaker is suggesting something for the group.