My department actually did a field trip to a steel mill the other day (during paid working hours). Steel mills are so fascinating and I can only recommended visiting one at least once. The sheer sizes of everything is just breathtaking and molten steel just looks glorious.
I would say that these kind of events are not unusual in German workplaces.
Sadly no dance parties… But we also didn't stay for the night shift 😅 Oh and fun fact: Steel mills must run 24h a day, 364 days a year (1st of May is off) for I think 20 years straight. That's just crazy.