The most luxury man-made marina in the world is absolutely stunning. Skyscrapers as far as the eye can reach. Restaurants of all kind are settled along the Marina with amazing views. Many cafes and shisha bars, as well as some shopping oportunitys are also based there. You can get a 360° panorama view out of the Marriott Hotel Bar on the 52 floor.
Marina Beach is interesting to see once, because of the skyline directly on the beach. You have the chance to get some beach chairs and parasols here. I don´t liked the beach much though, because the ocean view is hidden behind big construction areas.