Subida a Burj Khalifa. At the Top, Burj Khalifa. Skydeck Chicago. Willis Tower - a global icon, a premier business location, a breathtaking skydeck view. Sky100 Hong Kong Observation Deck Photo Gallery. International Commerce Centre - Tower. Makkah Royal Clock Tower Hotel, Mecca. Welcome to Abraj Al-Bait. The Tallest Tower in the World.