The giant reflector frame at the top of One Central Park East tower in Sydney is positioned to catch sunlight reflected up from heliostats on the roof of the lower building. At night the reflectors are illuminated with LEDs.

The giant reflector frame at the top of One Central Park East tower in Sydney is positioned to catch sunlight reflected up from heliostats on the roof of the lower building. At night the reflectors are illuminated with LEDs.