If you're spending some time in Old Town Cluj-Napoca, St. Michael's Church and Unirii Square are top sights worth seeing.
You'll enjoy the mountain views and churches in Central Park. You might want to make time for a stop at Central Park Simion Barnutiu or Casino Parcul Central.
When in Cetatuia Park, you can plan a visit to National History Museum of Transylvania and Matthias Corvinus House, some noteworthy sights in the nearby area.