This Skywalk is a Urban Landmark located in the middle of the Sathorn-Silom CBD (Central Business District) which connect the Chong Nonsi BTS station and the Sathorn BRT station. It accommodates 10,000+ commuters daily. There are many different viewpoints to photography the skywalk. The first would be directly under the arch where you can have a view of the skyscrapers above, make sure to bring some super wide lenses here. Second view point can be from the Sathorn Thani Complex Parking where you can get a nice view of the trains passing by. I'll suggest a tripod and some long exposures at night here. Third point of view can be on the top floor of the Asia centre building, where you have the view of the whole intersection from above. Best time for this shot is the golden hour before sunset. A 4th point of view would be from the infinity condominium, but then you would need to be invited by someone living there. Lastly, drone views are amazing but it's quite difficult to find the right time to fly, as it's pretty crowded all the time. The area is full of high end restaurants, my picks would be J'AIME (french), Nahm (Thai), Brioche from heaven (dessert) or Sorrento (italian).