Not only a historical site but a grand palace.
According to one story, the palace was originally built in 1902 to serve as a residence for the anticipated visit of the German Kaiser Wilhelm II. When WW1 interrupted plans for his visit, it was used as a German language school.
Eventually acquired by a wealthy landowner Shahin Serag El Din, it was inherited by his eldest son, Fuad Serag El Din (Siraj el Din) who was an important member and later leader of the Wafd Party and New Wafd Party. And, thus, opposed to the 1952 Egyptian Revolution.
There is a not insignificant gap between completion and the start of WW1 which is puzzling.
Samir Rafaat has a different story.
According to his version, the Palace was built for Carl Heinrich Beyerlé of the Credit Foncier Egyptien who died in 1908, shortly after moving in not for the Kaiser. After Carl’s death an upper class girls’ school was opened, but was unsuccessful.
Subsequently, Shahin Serag El Din purchased the mansion. And Fuad inherited it.
As usual, he provides copies of documents to back up his account. Google Samir Rafaat + On Death Row + Zamalek
Sadly, the mansion is not open to the public.
But you can get a walk around for an exterior view which gives some idea of the grandeur. Even though the building is not being maintained.
For a glimpse of the interior you can google "great egypt" +"Fuad Pasha Serageddin's palace".
It’s quite exquisite even though it has been abandoned for more than 20 years.
It's also historically significant.
Many important political meetings took place in the Palace: Wafd Party Meetings, Government Meetings. Fuad held several ministerial positions. Sometimes more than one at a time.
The palace is in Garden City on Kamel El-Shennawy Street (formerly Nabatat St.)
As you walk away from downtown towards the Four Seasons Nile Hotel along the Corniche Road, take the first left at the small traffic circle in front of the main entrance to the Kempinski Nile Hotel Garden City.
The palace is on the corner of Kamel El-Shennawy (the first street on the right) and Ahmad Basha (the second street on the right).
You can see it on google maps as " serag el din pasha palace"
For some reason, the location is being shown on the TA map as "Garden City, NJ". I have submitted a correction to TA.
One final note in case you want to google for more information.
There is no universal way in which Arabic is transliterated into English.
The Egyptian dialect of Arabic complicates transliteration even more.
You may see the family name as Sarageldin, Saraggedin, Sarag El Din, Sarag El Dine. First names as Chahine, Shanin, Fuad, Fouad. And no doubt many more variations.