I know there's a way of importing ages but you need to have a copy of Blender 2.45 installed not that that is an issue becuse you can have more than one version of Blender and Python on your PC.
The only cavitat is you watch to see which is the default for opening .blend files.
Information is available in the wiki
http://www.guildofwriters.org/wiki/PyPRP_Age_Importer
It's fiddly to set up but no big problem importing Cyan ages can hit a wall in that they are big and it's not uncommon for an age to be split into scenes.
Once you have the age imported you can save it as a .blend and then open it with later versions of Blender at this point you can navigate around looking at how various lighting and objects have been achieved for example in sharpers office how the view from the window has been done or the chrismas tree etc.
The city is big and broken into sections so an overall view is an issue.
I've only used this to learn how an age would be constructed and then it requires an effort to get your head past the detail to find particular parts.
This tool does come into it's own if you have had a PC hardware failure and one or some of your blend file/s has been lost you can go to an istalled copy and get some of the information back.
One point in its favour it will give you a better understanding of navigating within Blender and an appreciation of just how much detail there is in a Cyan age.
[Edit = typo corrections]