Grab take away food and head for the river. Wobble in the orange sun, but leave before it hits the ground. Resist temptation and walk past Trafalgar Tavern into the park. Climb One Tree Hill: venerable chestnut surrounded by significantly less tourists than the vis-à-vis Royal Observatory hill. Better vista too. Soak yourself in more sunset, then walk into the twilight across Blackheath Common. Join a local pub for sticky pud and idle talk under the starry sky.