Greenwich Observatory was built to look at the stars. But it's a fantastic place to look at London, too.
You look past the green lawns and Palladian architecture below, across the Thames, past the Dome and Canary Wharf, to the whole of north London spread out on its hills above the metropolis. Nowhere else do you get this feeling of the sheer scale of the city, and binding it all together, the sluggish grey ribbon of the river.
From Cutty Sark DLR station - it's an uphill walk so come motivated!
Send your feedback or queries to been.there@guardian.co.uk
Search Been there