The ice rink being prepared in the courtyard of Somerset.
See also Somerset House and water fountains at night and Ice Skating at Somerset House
Ice Skating: Steps to Success (Steps to Success Sports Series)
A Blog with pictures.
The current Somerset House was built as government offices around 1800. Parts of it were occupied for many years by the Inland Revenue with the courtyard used as a car park, but the buildings now house various art exhibitions and the courtyard is open to the public.