Starting from the Hotel I stayed at right at the Zagreb Town Square, I walked through a colorful narrow street to upper town to St. Mark's Church again. Took some obligated tourist photos.
From there, I walked to Lotrščak Tower, a medieval fortification built in the 13th century to guard the southern city gate. Every day at 12:00pm noon there will be a cannon fired in the tower. I paid a small fee and climb up to the town and in time to witness this event.
I continued leisurely walked around upper town and back to the Zagreb Cathedral and town square.
From there, I walked through Josip Juraj Strossmayer Park, then to King Tomislav Square (Trg Kralja Tomislava).
From there, I walked to Croatian National Theatre.