15K views · 85 reactions | Ordnance Survey's award winning OS Maps is now even better, with the new Aerial 3D layer | Ordnance Survey | Facebook

Sensitive military details were once hidden from public Ordnance Survey maps for fear of invasion. This secret copy of an 1876 map of Dover was kept by the War Department in the 19th century. | British Library

297K views · 3.7K reactions | Ordnance Survey maps filmed in 1965. Full film here: https://ow.ly/3p7B50Rohk8 | British Pathé | Facebook

Get to know the new-look OS Maps with 3 tips from OS Champion Rory Southworth. 1. Explore pre-made routes for your next adventure. You can use and follow these directly or they might be a great way to find start and end points for your own. 2. Switch between standard and topographic mapping to understand the contours and terrain of your route. 3. Once you've plotted your route, you can see an estimated time and a distance. It's great for your own planning and you can also screenshot that and sen