One hard condition.
Eighteen answers.
Every building here was given one hard condition. This is what each of them did about it. Rock, water, cold, an airport floor, a shell that had to stay, or a plot with no room left: the circumstance came first, and the building is the reply.
Ground that falls away or refuses to be levelled: cliffs, lava, steep banks that decide where a building stands
A river, lake or waterfall at the boundary of the site, shaping how the building is placed and turned
A winter season that supplies the material and then removes it, so the building exists only part of the year
An airport floor instead of a street, with no plot, no facade and no quiet hour to work with
An older structure that had to be kept, so all new work happens inside walls somebody else set
A tight urban plot with neighbours on every side, where space has to be won from the plan itself
A list of facilities tells you what a hotel offers. It does not tell you why the rooms are that shape, why the corridor bends, or why the whole building stands on legs. The condition does. Once you know that the ground drops away, or that the walls had to stay, or that the material melts in April, the rest of the building stops looking arbitrary and starts looking like a decision.