I am a licensed USA Architect and world traveler. I did not have high expectations for Tel Aviv architecture as the city was founded in 1909 and then consisted entirely of sand dunes. (For reference, my favorite cities for architecture are Barcelona, Spain and Florence, Italy).
I was pleasantly surprised by the proliferation of extremely high quality restored Bauhaus structures throughout Tel Aviv. I cheated and took a TouristIsrael.com live architecture 2-hour tour with guide, that was excellent and economical.
The City of Tel Aviv has strict renovation guidelines that ensure all renovated structures are restored to their precise original condition, resulting in many beautiful Bauhaus era buildings. I can see why it is a UNESCO heritage site. Highly recommended - take a walking tour if you can.