The 180° swing-and-slide windows from Ziam Gei Huat Aluminium Pte. Ltd. is one of the best window inventions.
Their clever design lets you push all the panels to a side, PLUS, you can rotate them at 180° for easy cleaning! It gives you that beautiful view, and also blocks out up to 90% of the noise!
It has been 16 years and there are ZERO accidents or cases of falling of windows reported! Safe and easy to use for everyone in the household.