The picture compares  the Central Library's floor plan 20 years ago and now. 
We can see that there was a lot of places had been redesigned compared to twenty years ago. 
However
, the constructional features  mostly remained the same, only for changes conducted.
In terms of equipment, we can see that there were tables and chairs in the central area, but it is empty now. In the new plan, we can tell there are multiple new pieces of furniture installed, Linking Words
such
 as couches, information desks, and machines that help people to borrow and search books. 
There are several redesigns of areas, the Linking Words
room
 at the top left corner is more spacious now and there are children's fiction books as opposed to CDs, videos, and computer games. The original children's books area is now a lecture Use synonyms
room
, the construction design remains the same. It is noticeable that the enquiry desk had been turned into a cafe Use synonyms
room
, Use synonyms
this
 Linking Words
room
 experienced the most change in terms of construction. Use synonyms
Finally
, the computer Linking Words
room
 now was the reading Use synonyms
room
 where people read magazines and learn the news, the door has been shifted to the adjacent to the right.Use synonyms