UNESCO has designated part of Tel Aviv--the White City--as a World Heritage Site. The buildings in it were built in the Bauhaus style in the early 1900s. The style praises asymmetry, plainness, and geometric figures.
Today, many of the buildings have turned grey with the years. But there are still some that recall the old Tel Aviv. Just take a walk down Bialek or Rothschild streets. You'll certainly find a few!
The city offers guided tours as well. For more information, see http://www.white-city.co.il/english/index.htm.