Burj Khalifa, Dubai

Standing over 2,700 feet and 163 floors high, this record-breaking skyscraper in downtown Dubai is the tallest structure in the world. Burj Khalifa has several open-air viewing decks and swanky lounges which offer splendid views of the UAE and the Persian Gulf. The highest lounge is located at level 154, and there is even a hotel at levels 38 and 39. Designed by Skidmore, Owings & Merrill architects, this mixed-used development atop Dubai Mall is inspired by the Great Mosque of Samarra in Iraq. You might want to buy skip-the-line tickets or join a tour to avoid snaking queues at this popular attraction in Dubai.