I love architecture and this building is already something from the outside but it has another plus for me: it is open to the public and hosts the Hamburg medical history museum. It was built by Fritz Schumacher in the early 20th century and is now a historical monument.
It used to host the pathology as part of the big campus which was built far from the center in order to prevent diseases from spreading over. Now you can enjoy the new exhibitions in the refurbished rooms and check out temporary themes as well. Sometimes it is not for the faint-hearted as it is about bodies and diseases. But for everyone into the human body and medicine, I highly recommend going there. And the others can just delve into the architecture of the building and its surroundings.
On Sundays you can enjoy a free guided tour (usually in German) at 15:00. The signature of the building on campus is 30b. The entrance is situated more towards the side entrance of the campus at the corner of Frickestraße/Schedestraße.