It was a set of squared and featureless buildings, painted a dusty uniform grey, of somewhat varied sizes and heights. No windows as far as she could see, though there might have been vents on the rooftops. Guards patrolled around the area in groups of two, all with the same armour she'd become familiar with seeing.
The building closest to her, one of the larger ones and the first one when coming from the city, had a visible but seemingly locked or at least closed door, flanked by two other guards, one on each side. Twilight levitated herself closer, trying to see if there was any obvious way she could get in from there or if looking for another way inside would have been better.
There was something in the air that shouldn't have been there, something itching against her horn almost like how static electricity would stick to her coat after wearing a sweater. She couldn't tell if it was some deliberate security measure or just a side effect of the work being done inside, but just to be careful she threw in another ward to dampen her magic's detectability.
The door didn't have a knob of any kind, or anything else to obviously open it with. It was a sheet of grey metal surrounded by equally grey concrete, the only real signs that it was there being its outline and the different texture of its surface. Twilight was about to move away from it and look for another entrance, but the light sound of hoofsteps from behind her made her pause. She rose further into the air and turned.
A unicorn wearing a lab coat, her coat a pale yellow cream, her dark brown mane in short bangs on the front and held into a tail on the back by a purple tie. She quickly made her way across the snow-covered stretch and barely looked at the guards as they looked at her. The door opened by itself, sliding upwards, and Twilight was quick to push herself inside after the mare before it slid closed again.
The immediate inside of the building was a short corridor with a closed door on each side, ending in a set of opened double doors that led to a square room rounded by padded benches and with a couple of tables in the middle, from which a few other corridors departed. The placed looked clean, not sparklingly so but certainly not dirty, and it was thankfully much warmer than the outside. The floor was tiled and the walls painted a faded yellow that hadn't seen a new coat in years. Sterile white lights hung from the ceiling, more reminiscent of what Twilight had seen in the human world than anything magical.
The place was empty, and silent. Twilight made her way into the first room, then took out her map of the area. Everything seemed to match, at least in terms of architecture, but there were no signs on any of the corridors to indicate what was actually where. Hoping her information was accurate, she headed down the second one to her right.