These photos are used on the main page of Catholicmatch.com
and Photo 2
The mystery is where this beautiful church is located and to which jurisdiction does it belong.
Ukrainian Catholic? Ukrainian Orthodox? Russian Orthodox?
Looks like Saint Vladimir is depicted on the wall and it may be St. Job of Pochaev on the iconostasis. If so, that may narrow down the search.
I sent an email for more info about the church used in their advertising. This was their response:
This church photo is a stock photo that we used, and we do not know where it came from. We purchased the rights to use the photo because of it's architectural beauty. We're not sure whether the church is Byzantine or Eastern Orthodox. We do not know the location or name of the church.
I doubt that it is an actual wedding that is taking place. It looks more to me like just a photo shoot.
Any assistance to solving this mystery will be greatly appreciated.