Blooming White Trees = Amazingness. I think they may be Malus sargentii 'Tina' (Flowering Crabapple)
Boxwood has long been the number-one choice for formal hedges. Because it is evergreen, it can give your garden a verdant structure year-round. It also takes to shaping very well, whether you want to shape a rectangular hedge, conical shrubs, rounded balls or a Bart Simpson–shaped topiary.
Photo: Malus sargentii 'Tina' (Flowering Crabapple)