Ανεβήκαμε στον παλιό πύργο.

Ανεβήκαμε is the 1st person plural form of ανεβαίνω in the aorist.

So it means:

• we went up
• we climbed up
• we ascended

The aorist presents the action as one completed event in the past.

• ανεβήκαμε = we went up / we climbed up as a completed action
• ανεβαίναμε = we were going up or we used to go up

So in this sentence, ανεβήκαμε shows a single whole event, not an ongoing or repeated one.

Because στον is the usual contracted form of σε + τον.

So:

• σε = to / at / in / on, depending on context
• τον = the for a masculine singular noun in the accusative

Together:

• σε τον παλιό πύργο → στον παλιό πύργο

This contraction is standard in normal Greek.

Because the phrase after στον is in the accusative singular.

The dictionary forms are:

• ο παλιός πύργος = the old tower

In this sentence they become:

• στον παλιό πύργο

Both the adjective and the noun change form:

• παλιός → παλιό
• πύργος → πύργο

The adjective changes because it must agree with the noun in gender, number, and case.

The dictionary form is ο πύργος.

It is a masculine noun meaning tower.
In the sentence, it appears as πύργο, which is the accusative singular form.

Greek uses the definite article very often. If you mean the old tower, you normally say στον παλιό πύργο.

If you leave the article out, the meaning changes or becomes less natural in many contexts:

• στον παλιό πύργο = to the old tower
• σε έναν παλιό πύργο = to an old tower

So the article is important for showing that this is a specific tower.

The verb ανεβαίνω mainly expresses upward movement. So the sentence tells you that we went up in relation to the old tower.

The exact English wording depends on context:

• we went up the old tower
• we climbed up the old tower
• sometimes we went up to the old tower or onto the old tower

Greek keeps the idea a bit broader than English, and the situation usually makes the exact meaning clear.

A simple pronunciation guide is:

a-ne-VI-ka-me ston pa-LYO PIR-go

Main stress:

• ανεβήκαμε
• παλιό
• πύργο

Yes. Greek word order is more flexible than English.

The most neutral version here is:

• Ανεβήκαμε στον παλιό πύργο.

But Greek can also say:

• Στον παλιό πύργο ανεβήκαμε.

That version gives more emphasis to where we went up. The endings help show the grammar, so Greek can move words around more freely than English.