Long Escalator

I noted that having a long escalator (at least one) is a trend in shopping center design nowadays.

I knew few years ago, there's also curve shape escalator. WTC Mangga Dua at Jakarta is one of building that has this.

Then In Singapore, they put the escalator outside.

Orchard 313 has long escalator outside. Nice design but it's dangerous.
Wisma Atria has long escalator outside heading to Food Republic.
Illuma has long escalator inside and outside. I think they have the longest escalator, don't they? Express from level 1, it will take you to level 4.