DIAMOND HEAD STATE MONUMENT
Not sure if Diamond Head State is always that exhausting or only because we went from Hanauma Bay (where we were laying in the sun and snorkeling for 5h) directly there but it was pretty though for me haha. That's also why the picture is in black and white due to the fact that I was so red and sweaty. :D After you hike all the way up you have to go lots of stairs to get to the lookout point, but it is worth it! You have a nice view of Waikiki and you can overlook everything.