
das Postamt
post office
A public building or postal service office where you can mail letters and packages, buy stamps, and use other postal services. Today the term 'Postfiliale' (post office branch) is often used.
Ich muss noch schnell zum Postamt, um das Paket für meine Tante aufzugeben.
I still have to quickly go to the post office to send the package for my aunt.