Pretty common in my country, they're awesome. Pointlessly gendered ones still remain though.

There really is an easy way to make those ungendered

• Add bins in both toilets (period wipes etc.)
• Remove male-focused urinals and replace them with unisex urinals.
• Have both bathrooms have the same number of urinals, same number of toilet booths.

It's also cheaper than building an entire new room for a third gender and eliminates the segregation wholly. On top of that, now queues are a thing of the past, as everyone can just quickly go to either spot. Personally I'm not a fan of urinals, but hey, as long as either toilet and urinal get cleant quickly..

If a new room must be added, it could be a disability-accessible toilet + have a diaper changing spot for babies. That's also family-friendlier.

Unisex toilets liberate men, women, everyone. It makes it all more streamlined while increasing safety.