El càmping té una història llarga.

Yes. In this sentence, càmping is treated as a masculine singular noun, so it takes el.

A useful thing to know is that càmping in Catalan often means a campsite / campground / holiday camping site, not just the activity of camping. So el càmping here means the campsite.

Because it is a borrowed word, its gender is something you mostly just learn with the noun. In standard usage, càmping is normally masculine.

Té means has.

It comes from the verb tenir, which means to have.

So:

• tenir = to have
• té = he/she/it has

In this sentence:

• El càmping = the subject
• té = has
• una història llarga = a long history

The accent in té helps distinguish it from te.

• té = has
• te = tea or an unstressed form of you in some contexts

So the accent is important because it marks a different word and pronunciation.

The accent in càmping shows where the stress goes and helps fit Catalan spelling rules.

It is pronounced with the stress on the first syllable: CÀM-ping.

Catalan often adds accents to borrowed words so they match normal Catalan pronunciation and spelling patterns.

Because història is a feminine singular noun.

So:

• una història = a history / a story
• la història = the history / the story

The adjective also agrees with it:

• una història llarga = a long history

Both una and llarga are feminine singular to match història.

Because adjectives in Catalan usually agree with the noun in gender and number.

Here:

• història is feminine singular
• so the adjective must also be feminine singular: llarga

Compare:

• un llibre llarg = a long book
• una història llarga = a long history

In Catalan, adjectives often come after the noun.

So the most neutral word order is:

• una història llarga

This is very normal Catalan word order.

English usually puts adjectives before the noun, but Catalan often places them after it.

Yes, you could.

Both are possible:

• una història llarga
• una llarga història

But they are not exactly identical in feel.

• una història llarga is the more neutral, straightforward order
• una llarga història sounds a bit more literary, expressive, or stylistically marked

So for a learner, una història llarga is the safest default.

Catalan often does not need a subject pronoun when the subject is already clear.

Here, the subject is explicitly stated:

• El càmping

So there is no need to add a pronoun.

Catalan also commonly leaves out subject pronouns even when the subject is just understood from the verb form. That is different from English, which usually requires them.

It can mean both, depending on context.

• història = history
• història = story

In this sentence, because of té una història llarga, the meaning is clearly history in the sense of past / background / long existence.

So here it means that the campsite has existed for a long time or has a long background.

A simple pronunciation guide is:

el CAM-ping te OO-na is-TO-ree-a LYAR-ga

A few helpful notes:

• càmping is stressed on the first syllable
• té is a short stressed word
• història is stressed on tò
• ll in llarga is not like normal English l; it is closer to the lli sound in million for many learners, though the exact sound depends on accent

A more Catalan-like approximation would be: el CAM-ping té OO-na ees-TO-ree-a LYAR-ga

Yes, it is completely normal.

Catalan uses tenir here just like English uses to have:

• tenir una història = to have a history
• tenir una llarga història = to have a long history

So this sentence is a very natural way to express the idea.