Here From There, and There From Here
One thousand years in the form of a Millennium Bridge separate the Tate Modern, housed in an old power plant, from St. Paul's Cathedral. The current cathedral — the fourth to stand on the site of St. Paul's — is far from a millennium old, but blogiodic license practically demands that I use the presence and name of the bridge, between the pair, to paint in vaguest terms some old stuff/new stuff parallel or metaphor and spew it out half-cocked like the lazy American that I am.
The Tate Modern, from the tippy top of St. Paul's:

The Millennium Bridge and St. Paul's:

That last picture was taken from the following spot. In 2002, the Queen designated it for Millennium-and-St.-Paul's picture taking, so people would stop getting it wrong. The Millennium Bridge actually looks quite bad photographed from most other angles.

I noted above that Americans are lazy, which isn't precisely true. They are, rather, "strong and simple," as I read in the PizzaExpress menu, where they describe their "American" pizza thusly:
Nothing but a big helping of peperoni for those who love their flavours strong and simple.
I laughed out loud.
More tomorrow, perhaps, and with more pictures. It's been more difficult than I expected to blog while here, for reasons both technical and not that I'll no doubt rant about some other time. For the moment, I'm off to dinner.
Comments
We have nearly the identical picture to yours from our recent honeymoon. Only the pedestrians are different. (I'm speaking of the photo from the Millennium Bridge, as we didn't scale St. Paul's.) That whole region around the Tate Modern (we stayed just up the street from it at the Mad Hatter Hotel), the Globe, the Thames and the Clink was one of my favorite spots. So jealous, looking at it again.
For easy internet access, try the Starbucks in the alley by the Clink, if only because I find it amusing to see a Starbucks across a brick back-alley from a dangling corpse in a crow's cage and a prison turned into condos.
I. Love. London.