der Treffpunkt
meeting point
A place where people have arranged to meet or meet regularly.
Wir machen den Haupteingang vom Bahnhof als Treffpunkt aus.
We'll set the main entrance of the train station as the meeting point.

meeting point
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meeting point
A place where people have arranged to meet or meet regularly.
Wir machen den Haupteingang vom Bahnhof als Treffpunkt aus.
We'll set the main entrance of the train station as the meeting point.

The word is made up of the verb 'treffen' (to meet) and the noun 'der Punkt' (point). So it literally describes a 'point where people meet'.
Lasst uns einen Treffpunkt am See vereinbaren.
Let's agree on a meeting point by the lake.
To set a meeting point, the verbs 'ausmachen' (to arrange) or 'vereinbaren' (to agree on) are often used. Both mean that people agree on a place.
Wir haben den Eingang des Museums als Treffpunkt ausgemacht.
We arranged the entrance of the museum as the meeting point.
To describe movement, you use 'zum Treffpunkt gehen/fahren' (to go/drive to the meeting point). When you are already there, you use 'am Treffpunkt sein/warten' (to be/wait at the meeting point).
Ich fahre jetzt zum Treffpunkt.
I'm driving to the meeting point now.
center
'der Mittelpunkt' and 'der Treffpunkt' can both refer to an important place where people come together. However, 'Mittelpunkt' describes a central place that is important for a town, a group, or many activities. 'Treffpunkt' specifically means the place where people arrange to meet or meet regularly. The words can be confused because a central place can often also be a meeting point. Still, the difference is clear: 'Mittelpunkt' describes the central importance of a place, while 'Treffpunkt' describes the arrangement to meet or the meeting there.

Unser Treffpunkt ist um acht Uhr vor dem Kino.
Our meeting point is at eight o'clock in front of the cinema.
Der Marktplatz ist der Mittelpunkt des kleinen Ortes.
The market square is the hub of the small town.