There is no “best” side for cruising the Panama Canal. You will most likely find you want to enjoy the experience from different areas on the ship. When you’re in a lock, it’s fascinating to watch the mechanisms of these engineering masterpieces, so find the best position on deck to observe this.
On Celebrity Beyond, guests of The Retreat can take in the view from The Retreat Sundeck. Other vantage points include the Magic Carpet, cantilevered over the side of the ship, as well as the Rooftop Terrace and the Sunset Bar.
On Celebrity Summit, guests of The Retreat can view the locks from the Retreat Sundeck on deck 12 forward. Other options include the Sky Lounge, which has panoramic forward views and is climate-controlled, or the Rooftop Terrace, aft.
On a transit from Panama City to Colon, the futuristic skyline of Panama City will be on your starboard (right) side. When you pass through the skinny Culebra Cut between Panama City and Gamboa, you’ll have the greenery of a national park on both sides, so this is a good time to look for monkeys and toucans in the trees.
Entering Gatun Lake, it’s fun to be forward on deck as you can see the procession of ships coming towards you. You could also be aft, at the back of the ship, with a pair of binoculars to spot other ships.
The most important thing to do is to head up on deck and absorb this spectacular experience. Every transit will have expert commentary that’s broadcast on the decks and in the lounges, so you’ll be able to gain a deeper insight into the workings of the canal and its history.