Park Güell Official site ?

I think this is the official site:
https://parkguell.barcelona/en

I think that is the one, from Liz, but it's confusing to try to find the correct one online..more confusing than usual..

Yes, I can confirm Liz's is the correct one.

It’s a fair question to ask.

Barcelona is one of the world’s top tourist destinations, so naturally, many businesses are trying to benefit from the city’s popularity and global appeal. Most operate legally and legitimately, but not all of them do.

Every year, the Barcelona City Council, the Barcelona’s Municipal Consumer Information Office (OMIC) -local consumer protection office-, and the Catalan Consumer Agency receive complaints from both locals and visitors about possible scams, misleading websites, or illegal practices related to tickets, bookings, and tourist activities. Usually, action is taken quite swiftly -when possible-, but some of these websites operate from abroad, which makes legal procedures slower and more complicated.

Because of this, it’s always important to make sure you are using the official website, or at least an authorised reseller. In fact, many of the most popular attractions do not even need intermediaries because they already sell all their tickets directly, therefore there's only one point of sale to consider.