Drivers, pedestrians and bicyclists are wondering what’s going inside the big windowless concrete fortress on the north side of Fruitville Road between Lemon and Central avenues. It may look like a bunker, but it’s Urban Flats, a 228-unit apartment complex on almost three acres in the Rosemary District.

Developed by Tampa’s Framework Group, Urban Flats will be five stories when finished and will include studios, one-, two-and three-bedroom apartments renting for an average of about $1,700 a month.

And for those who were worried about that big blank wall facing Fruitville, turns out it’s part of a 406-car parking garage, which will be hidden once it’s surrounded by apartments with balconies. Construction started late last spring and should be finished this spring.