Oman is great!
I don't have many pictures of Muscat (as I like traveling outside of the city + love historical places) but here's a few of my journeys around Oman.
Image 1: the Al Bustan Beach (Muscat, Oman). Great place for water type and rock type catches. Al Bustan Hotel has multiple gyms and Pokestops
Image 2: Ain Al Thawarah (hot springs in Rustaq, Oman). The hot water is great for relaxing, and there's little fishes that nibble at your dead skin and clean your feet! Features 1 Pokestop.
Image 3: I think this is Bahla Castle? (Nizwa, Oman). A UNESCO World Heritage Site.
Image 4: The reason why they tell you to not play Pokemon Go and drive . You don't see them walking freely in the city, so you gotta head out of the city to see a treat like this!
Since I'm also a frequent UAE player, there so some great pics from Dubai as well.
Image 1: The Burj Khalifa (Dubai, UAE). The world's tallest building! (And yes, I've caught a Pidgey from the 145th floor!)
Image 2: Pokestop Indicators (Deira, Dubai, UAE). Pokemon Go is so popular that Pokestops are marked on the street!
If you'd like any more pictures or information, please let me know! I'd love to share more with you all