Tel Aviv is a fascinatingly diverse city and one of the reasons is its incredible collection of Bauhaus architecture which is actually the largest collection in the world.
The architecture covers much of the 'old' part of the city (really it's only about 100 years old) but if you have a limited amount of time, don't be tempted to spend it in a museum if you haven't explored here.
www.visit-tlv.com/
www.touristisrael.com/tel-aviv/3/
Best places to walk - Rothschild Boulevard, Bialik Street, and Sheinkin Street
Google map: bit.ly/L5WCc4