It's a tall tropical looking flower that I've seen planted in the
center of dome-shaped flower beds in city parkettes (Toronto). The
flowers are delicate looking red-orange, on a long stalk, (like
calla-lily) with long, deep-green leaves that "go up" (ie they don't
flop over). It's not a calla-lily because it doesn't have stamen
showing.

They seem to be used by the city and also apartment buildings for
height and colour in the center of the annual flower beds.

Canna lily perhaps?
sed5555