اپنے شہر کو وقت کے ساتھ بدلتا دیکھیں
Old Survey of India maps, laid exactly over today’s satellite images. Slide between 1913 and today, follow short stories about forests, rivers and neighbourhoods, and find what stood where you live.
Each card shows the years with full map coverage. Lahore is open to explore; for the others, every survey sheet is listed and ready to download while we build their explorers.
Survey of India and Survey of Pakistan maps at one inch to a mile, scanned by libraries and gathered in an open collection.
Each sheet is pinned by the latitude and longitude printed on its border and checked against landmarks, to within about 30–40 m.
Landsat and Sentinel-2 images from 1990 to today sit on the same grid, so you can swipe from 1913 to 2026 in one move.
Stories that take you to one spot on the map and show what changed there, from the first survey in 1913 to satellite images of 2026.
The year in a file name is when the sheet was printed; the survey year is in its top margin and may be older. Each download opens the scan on Zenodo.
Every historical map here is a Survey of India one-inch sheet (1 inch to 1 mile) or its Survey of Pakistan successor at 1:50,000. Each was fitted to the latitude and longitude printed on its border, so all of them line up to within about 30–40 m. Their colours have been balanced to the same paper and ink so that differences you see are on the ground, not in the printing.
Each scan was fitted to its four printed corners with a projective transform and resampled to a common grid of about 9–15 m per pixel. Paper, ink and tint colours were matched to the 1929 southern sheet, the cleanest print. The 1990–2020 layers are cloud-free Landsat composites at 30 m and 2026 is Sentinel-2 at 10 m; season and haze differ a little between years, so compare buildings and rivers rather than exact shades of green. Landmark positions are approximate.
CreditsSurvey of India and Survey of Pakistan sheets 44 I/1, I/3, I/5, I/6 and I/7, 1913 to 1962, from the “Old Survey of India Maps” collection curated by John Brown on Zenodo, CC BY 4.0; original copies held by University of Michigan Library, University of Toronto Library and the Library of Congress. Landsat imagery courtesy of the U.S. Geological Survey and NASA. Contains modified Copernicus Sentinel data 2025–2026. Built-up surface: GHSL Data Package 2023, European Commission Joint Research Centre. Processed in Google Earth Engine. A Lahore Land Lab project.