The Royal Park offers great views of London and the city; As well as housing the Royal Observatory which includes a museum of astronomical and navigational tools, part of the National Maritime Museum.
One of London's best kept secrets, Spiritual Bar is a small and super welcoming live music bar on a side road near Chalk Farm station. Always somehow busy but not too packed, they play host to most of London's best emerging blues, rock and folk musicians, and owner Raf is the nicest dude you could meet. And makes a serious mojito
If you like some nice cool beer, portuguese sweets (the once with yellow custard inside) tasty and affordable sandwiches, good strong coffee and football, at all hours. Max Snack Bar is worth checking out.