With all the attention tourists and locals pay to the new (ish) Millennium Park, this small courtyard at the Art Institute of Chicago is now mostly ignored, or at least underappreciated. Which is a shame, because it's a lovely space.

A large pool with bubbling fountains arranges the space, grouping planters of low, wide-spreading hawthornes (Crataegus) on each side.
English ivy (Hedera helix) are trained up the trunks, which has to be a bit of a maintenance issue - I would think they need to clip them back a few times a year!
Buffering the traffic of Michigan Avenue are large planters of honey locusts (Gleditsia triacanthos var. inermis). Much like at Paley Park, honey locusts are used to terrific effect as plants that can get quite tall in maturity but yet grow very well in the space to which it is confined. In the open, the tree could have a broad, spreading shape. But in narrow confines, it has a loose, columnar habit.