I am not a museum person, but it was one that I was really into and it is very interactive. It is like you are watching a movie and you are there. It is worthwhile going to!
If you're a fan of history you cannot help but visit the Haganah Museum where you'll learn all about Israel's league of risk-taking idealists who were willing to put their lives on the line for the safety and security of the Jewish settlers under the British Commonwealth. Learn what it took for Israel to scratch together the resources which today comprise one of the strongest defense force on the planet.
The Haganah museum holds historical exhibitions and photographs about the pre-state underground group. For me it is an important museum since my grandfather was involved in this group which later integrated with the Palmach and the IDF. It is not as new as the Palmach museum, but it tells the story of the Haganah in an informative matter. If you are interested in the history of the IDF and Israel before 1948, it is a nice museum to visit. The building itself is in the eclectic architecture style which is really nice to look at.
The Hazena Museum, a long history, tells the story of the founding of Israel.
Every place in Tel Aviv should be strolled around. There is nothing special about the appearance here. It is a beautiful small building, but the tour guide explained the history and sources, so I think it is worth seeing.