For decades, neon lighting has been synonymous with Hong Kong’s nightscape. Businesses compete among themselves to erect bigger, fancier and more colourful neon signs till the city became engulfed in the gas’s soft glow. However the onset of more efficient LEDs and stricter building codes meant that neon signs are being replaced or removed. Although many conservation groups are starting to call for the preservation of these signs, the Guardian reported that up to 90% of them have disappeared during the last 20 years. In addition, many of the existing signs are in disrepair. Thus if you are visiting Hong Kong today, do look up and gaze at these signs before their light fades from the city forever.