Cities, like living things, evolve slowly over time. Buildings and structures get added and renovated and removed, and in this process, bits and pieces that get left behind. Vestiges. Just as humans have tailbones and whales have pelvic bones, cities have doors that open into a limb-breaking drop, segments of fences that anyone can walk around, and pipes that carry nothing at all.
Most of the time, these architectural leftovers rust or crumble or get taken down. But other times, these vestiges aren’t removed. They remain in the urban organism. And sometimes—even though they no longer serve any discernible purpose—they’re actually maintained. They get cleaned and polished and re-painted just because they’re there.
These urban vestiges first caught the attention of an artist in Japan named Akasegawa Genpei. One day, in 1972, he was walking to lunch, and he came across a staircase that went up and then back down but had no door at the top. Then Akasegawa noticed that a piece of the railing that had been recently fixed. That's when something clicked.
Akasegawa started noticing similar urban leftovers, and treasured them as artistic byproducts of the city. He photographed all the things he could find that were both vestigial and maintained. He began publishing his findings in a magazine column, accompanied by musings about each object.
People began to send Akasegawa pictures of similar architectural leftovers that they found, and in his column, Akasegawa would judge all submissions on two criteria:
1. Were they truly, completely useless?
2. Were they regularly maintained?
In 1985 Akasegawa published a book of these collected photographs and writings, in which he coined a term for these kinds of urban leftovers. He called them, “Thomassons.”