New York City is one of the most famous cities in the world. As such, it should be seen over the course of days. If you just have a long layover there like me, you do what you can to see the sights. This is a guide to what to see in NYC including the Brooklyn Bridge, Ground Zero, Freedom Tower, Times Square, Central Park, Katz Delicatessen, and the viewpoint at SUMMITOne Vanderbilt Tower.

The say that the Stockholm Metro (or Tunnelbana) is the world's longest art gallery. Nearby every station you get off at, you will be welcomed by new and vibrant art. Some amazing stations include Solna Centrum, Hallonbergen, Universitet, Tekniska Högskolan, T-Centralen, Morby Centrum, Rådhuset, Näckrosen, Huvudsta, Solna Strand, Tensta, and Thorilsplan.

This Chinese capital city is HUGE and it can be intimidating to see. The must-see stops of Beijing include The Forbidden City, Tianenmen Square, and the Summer Palace. You can also see different portions of the Great Wall from Beijing as well. Don't forget to sample the street food and spend some time in a tea house.

This city of superlatives is great for a layover (by booking an Emirates flight) or extended stay. This is a breakdown of some of the coolest places to see including the Burj Khalifa, Burj Al-Arab, Sheikh Zayed Mosque, Dubai Marina, Dubai Mall, Mall of the Emirates, and the Souks at Madinat Jumeirah.

If you like epic skylines (either to enjoy or to photograph), the Chinese city of Shanghai is impressive. A more westernized city than other places in China, the city has plenty of character and is comprised of very different boroughs. Great landmarks and areas to see in Shanghai include Tianzifang, The Bund, Jing'An Sculpture Park and Temple, and the Shanghai World Financial Center.

The Swedish capital of Stockholm is arguably the best in all of Scandinavia. An archipelago of 14 islands, the city offers great attractions and museums such as Fotografiska, Erik's Gondolen, Monteliusvägen, Gröna Lund, Gamla Stan, Riddarholm Church, Royal Palace, Vasa and ABBA Museums, and the Stockholm Tunnelbana.