Have you seen the giant, pink heart on the Denver skyline?

The design spans 8 floors of 1144 Fifteenth, otherwise known as the Optiv building. It& #39;s a tribute to doctors, nurses, and others working on the front lines. @KDVR

And while it seemingly appeared overnight... It actually took weeks of planning to pull off. Engineers from @Hines used blueprints of the building to figure out which windows to light up.

Then they bought pink gels from a theater supply company, and wrapped them around LED lights.

The final product? A beautiful heart visible for miles West of Denver. Pretty cool move by @Hines!