The brand new Museum of Liverpool has just opened. Designed by 3XN Architects, this is the largest museum to open in britain for 100 years.
There is also an interesting description about the use of staircases as central hubs and also social interaction spaces, including views of internal areas. This is exactly the approach taken by the Guggenheim Museum in New York, where the central staircase forms the actual main galleries, with a large central space.
Buro Happold Lighting took care of the illuminations and with great effect.
Link to their website: http://www.weef.de/oneone/www/index.php?weef=2&ug1=0&ug2=14&ug3=170&lang=09_uk