Para ir a

Para ir a
 

I have this

¿Para ir a la cathedral?
How do I get to the cathedral?

Is Para How or is there a another interpretation of this.
My dictionary (indicando finalidad, uso) [for]

indicando finalidad, uso
Indicating purpose, use

indicando dirección
el autobús para Marbella = Indicating address = the bus to Marbella

However Còmo se hace? = how do you do it.
As a child I was taught Còmo meant how

Forget about literal translations. A translation works because it conveys the same idea, it doesn't repeat the same words.

Strictly speaking, the sentence is fragmentary, but the meaning is clear without a verb and subject.

"Para" here means something like "in order to".
The question is asking what do I have to do to get to the cathedral.
"¿Qué tengo que hacer para ir a la catedral?" is a long unnatural sentence, so it's shortened. The "translation in English is using the equivalent natural expression you would use to ask the same.

Would Para be more used than Cómo in this context as I used to say Cómo as a child on holiday.

No, "para" has nothing to do with "cómo". It's the unexpressed part of the sentence what gives meaning to the question. See te previous explanation. :)