What better way to mark the New Year than a walk through our splendid capital city. I went today with friends from the Greenwich Observatory - where this panoramic view was taken - over to Wapping on the other side of the river.
And we made our way across the Thames not on the water, or above the water, but below the riverbed.
The Royal Observatory at Greenwich marks the meridian line and gave its name to GMT, Greenwich Mean Time.
The slopes leading up to the Observatory were also the location, on 15 February 1894, of an explosion in which a 26-year-old Frenchman, Martial Bourdin, died. He was, it seems, a 'propaganda-by-the-deed' anarchist carrying a bomb which exploded prematurely. He may have intended blowing up the Observatory.
This was the incident which Joseph Conrad transposed in to fiction in one of his greatest novels, The Secret Agent, published in 1907.
In the centre of Greenwich, there's the entrance to one of London's most curious transport arteries. The Greenwich Foot Tunnel under the Thames was commissioned by the London County Council and opened in 1902.
The tunnel stretches for 370 metres below the Thames at a depth of fifteen metres. It's open 24 hours a day - as is a similar foot tunnel a little further out in Woolwich - and is used by about 4,000 people daily.
I'm surprised the foot tunnel isn't much busier - it's spacious and well lit and not in the least spooky. Honest!
On the north side of the river, you surface on the southern tip of the Isle of Dogs - once a maritime area of shipyards and wharves, and still bearing some reminders of its glory days.
The SS Great Eastern - the largest ship of its time - was built and (eventually) launched here in the 1850s.
And there are other reminders of the area's maritime past
Among the architecturally more intriguing buildings is a former Presbyterian church at Millwall, built in the 1850s and closed for worship in the 1970s, which is now The Space, an arts and performance venue.
It's a bit cluttered in design but at least it stands out!
As you head up the west side of the Isle of Dogs and pass Canary Wharf, you reach Limehouse, and the magic of Narrow Street and its riverside tavern, The Grapes - and there are steps down to Ratcliff 'Beach'.
But our destination was a little further west, the excellent, and historic, Prospect of Whitby at Wapping.
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