Hostile architecture, also known as defensive architecture, is designed to subtly make a place an unwelcome place to stay for long periods of time. Spikes, armrests that prevent lying down, and snake pits are examples of this creative phenomenon.
Designers most commonly use these features in urban environments to discourage homeless people from staying too long. To mitigate them, artist Sarah Ross made clothing that allows the wearer to find comfort in deliberately uncomfortable places. She calls the outfits Archisuits. You can see them all here.
-via Design You Trust