Site - seeing is roaming an area to observe attractions, sites, etc.
The correct spelling is sightseeing (seeing the local sights, or points of interest).
have fun go siteseeing do something the both of you that you havent thought of doing in a long while or try something that both of you have been yearning to do like bunjijumping that will definelty rejuvenate your relationship but dont do something that will get you both behind bars