I love historic images. This postcard shows the Coolsingelziekenhuis in Rotterdam, The Netherlands. Unfortunately I couldn't find a link in English to read more about it, but I have figured out it is the "Great Hospital" or "Coolsingel Hospital", which was built by Willem Nicolaas Rose between 1839-1848. I have a feeling it might not have survived WWII.
I seem to be collecting Postcrossing stamps!
Postcrossing card #44