Once were tallest

It's a competitive business, this World's Tallest Building thing. Kuala Lumpur's poor old Petronas Towers officially held the title from 1998 to 2004. They were soon overtaken by upstart Taipei 101, which in turn was dwarfed in 2010 by Dubai's Burj Khalifa.

You might just be fooled though, by a quick glance at the display panel they show you. They've drawn their towers to a different height scale than the others, and they look to be still the highest!

I went up anyway. I can't say no to a World's Tallest Building, or third or fourth tallest, or whatever it is today.

(Addendum: I just checked, and they're already down to number 7 - how quickly they fall!)