Embankment - walking distance, what's around?

[katepol]

For grown ups, not children. We will have a few hours to have a look at what's around on a weekend, so any recommnedations/things not to both with?
Ta

From embankment it is an easy walk to Trafalgar Square (Nelson's column, portrait gallery, national gallery)
Tate Modern
A Tate to Tate boat trip (a spotty boat takes you to the Tate Britain and Tate Modern)
Millenneum Bridge
Covent Garden
London Eye
Houses of Parliament/Big Ben

TBH you are so central at Embankment there is loads you could see.
Depending on when you will be there, there are often events on the South Bank.