London is currently hosting a showcase of *karakuri ningyo*, traditional Japanese mechanical dolls dating back to the Edo Period. These fascinating automata, crafted from wood, are unique for being powered solely by springs and counterweights—no electricity was involved in their operation. Popular entertainment during Japan’s Edo Period (1603-1868), *karakuri ningyo* were often displayed by temple vendors or used in religious ceremonies. The dolls demonstrate remarkable ingenuity in their construction, capable of performing intricate movements like walking, serving tea, and even writing calligraphy. The exhibit offers a rare glimpse into the sophisticated engineering and artistry of pre-modern Japan. Experts highlight the dolls as a testament to Japanese innovation and cultural heritage, captivating modern audiences with their intricate mechanics and historical significance.