TRAMS
Take the tram is probably the best way to get around Zagreb. The trams have been operating safely through the streets of Zagreb for more than a century, running along around 120 kilometres track. Easily recognizable by their blue color, trams run day and night. 15 lines run during the day from 4am to midnight and 4 nights lines run from midnight to 5am. During the day, each line runs on average every 5 to 10 minutes, while at night, it would be around 40 minutes. You can find more information on the daytime lines at this link and on the night-time lines here.