Retail and catering outlets have been removed from the concourse to make more circulation space.

"Monty planned it so the garden acts as a kind of split-level circulation space between the house and my office," he said.

The circulation spaces are designed to make them usable as additional exhibition areas.

The photographs receive the brightest light, with the circulation spaces dimmer and the screening rooms pitch-dark.

Though this one is flat, the idea is the same: to combine a monumental hall with the prime circulation space of the museum.

Linear spaces become circulation spaces: the closer the visual contact the greater the social contact.

There is also no wasted circulation space, with every area made usable for displaying art.

The corridors and circulation spaces all lead toward light.

The idea is to transform the plaza from a circulation space to a destination space.

The changes include a wider, taller circulation space in the mall below and installation of a 3-block long, continuous skylight above.