Palladio has designed one of the entrance portals and the cupola, but neither is really unique. Church structure appears to be stone, with brick infills. No reinforcement iron rods between the internal bays, which is a plus- Italians tended to feel shaky about their gothic structures, so they additionally added the horizontal rods between arches. The crypt under the main altar was worth entering, it's lit by natural light. Overall the church is pretty standard, I found the most interesting features to be art deco / cubist frescoes in one of the arches infills towards the altar.

big, rather new, with little historic or artistic value, the Cathedral of Vicenza is not a must. but it's a nice setting around it.