This strangely colored cathedral is one of the most photogenic spots in Da Nang due to its 'millennial' pink color. It's an interesting piece of western architecture in the midst of the local culture.
If you need a quick Instagram shot or just wish to take a look, it's a nice and short detour from your trip.
Official Website https://en.wikipedia.org/wiki/Roman_Catholic_Diocese_of_%C4%90%C3%A0_N%E1%BA%B5ng
Coordinates 16°4'0.058" N 108°13'23.01" E