One of the best things about a city like New York City, Chicago, or Shanghai is its skyline at night. As iconic as an image of the city in day time, the night skyline is yet another of a city’s signature. It’s also fun to see how skylines like Manhattan’s have evolved throughout the decades, from small buildings to huge skyscrapers. Here are our weekly Hashtag #UntappedCities on Instagram and Twitter if you would like to have one of your photos entered in the running for our weekly“Best Of” column. Also, you can keep an eye on what contributors and readers are checking out by browsing the live photo pool.