You can catch the free little blue train every weekend, 10 a.m. – 7:20 p.m., and it departs every 40 min from Ban Jelačić Square. The adorable train takes you through the heart of the city (streets such as Ilica, Frankopanska, Masarykova, Teslina, and Praška), and then returns to where you started from, with smiles on your faces, and without blisters on your feet.