I had bad luck with my visit to Baha'i gardens and the Shrine of the Bab in Haifa. Gardens are closed if it's rainy day (because the stairs are really slippery when they're wet) and it was raining every morning of my stay so the gardens stayed closed. The shrine was also under construction so the site wasn't that impressing looking.

In my visit to Akko I took the local bus to Bahje house and the Baha'i gardens around it. The house, which was the home of Baha'ullah, is open only in the morning (for Baha'is it's always open) so it was closed when I visited it in the afternoon. You get the see the gardens outside which were very clean and straight like the ones in Haifa. Doorman at the gate gives you an information leaflet in your own language (he said they have it in every language, I doubt it). The Bahje house looks like any other Mediterranean mansion built in the 1800s. More interesting was to watch the pilgrims going to see the holiest place of their religion. I think that if you like gardens this place is worth of visit, by bus it was only 10 minutes from Akko.