You must turn on the browser location services to get the route from your current location to the sign, and the distance (as the crow flies) from your current location to the sign.
After activating location services, refresh the page.
Photographers note: The picture may be sideways and Ive no clue why that is. Picture is taken just beside Tower Hill/Tower Gateway station(s) in London, no idea when the sign is from and if its authentic or if it has been created recently but made to look old. Either way I thought it was quite interesting.