Summarize this paragraph and extract all entities into a list: John and Sarah had planned their trip to New York City for months, and they were finally standing in front of the towering Empire State Building. They had been looking forward to this moment for so long, and now they were finally going to ascend to the top of one of the most iconic landmarks in the world. As they made their way to the observation deck, they couldn't help but marvel at the bustling streets below. 