Tower of Lids

Tower of Lids turns an ordinary walk into a quiet urban treasure hunt. Beneath your feet is an open-air museum of cast-iron patterns, city emblems, sakura petals, industrial gears, and hidden design details from streets around the world. Take a photo of a manhole cover, and Tower of Lids helps identify its city, era, and visual style. The app compares your find with a large catalog of known designs and assigns a rarity level from common to legendary. Your personal collection grows with every walk, trip, and unexpected discovery. Your field journal shows statistics by country, period, and category, from 19th-century industrial cast iron to Japanese minimalism, Soviet brutalism, and modern urban design. Each find brings points, achievements, and small milestones that make every route feel more meaningful. Explore the world Atlas, mark routes on an interactive map, and plan your next city expedition. Tower of Lids works offline, stores your collection only on your device, and includes no ads or cloud syncing. With a dark interface, handcrafted typography, and illustrations inspired by different urban eras, Tower of Lids is more than a collecting tool. It is a personal archive of overlooked city beauty, where the smallest street detail can become your next rare discovery.