Don't forget that Milan is a very old city (initially settled 400BC) so there was probably lots of old infrastructure and stuff to work around. Similarly old Am

Don't forget that Milan is a very old city (initially settled 400BC) so there was probably lots of old infrastructure and stuff to work around. Similarly old Amsterdam has a collection of all the objects found during the digging for one of the metro lines in one of the stations, with all sorts of very old coins, plates, knives, etc.