Several historical buildings are preserved by governments as heritage sites. A group of individuals believes that they should be demolished and replaced with new buildings. I strongly opine that retaining old buildings is important since it holds a lot of historical values and cities look unique that combined modern and old architecture.
According to many people protecting ancient buildings is important since they have many historical values. In other words, the majority of these buildings had become eyewitnesses of some special and tragic moments of a city. A perfect example of this would be Hagia Sophia, an architectural intelligence of Byzantine architecture, formerly a Greek Christian cathedral, later converted to an Ottoman Imperial mosque and now a museum in Istanbul, Turkey which attracts thousands of tourists and reflects the cultural heritage of many empires.
Many of the cities still preserving these sites and building new high rises around them to fulfil the drastic need of the growing population. These historical buildings standing along with the new skyscrapers showcase a unique view of the city. Therefore, the combination of old and modern structures has made the city fascinating and attractive. One of the examples is the Dubai Frame building, a landmark positioned in such a way that represents modern Dubai at one side, while from other side visitors can view the older part of the city.
To sum up, maintaining historical buildings is an essential thing because they had become the witness of some important events. And it is a fact that the combination of old and modern buildings brings a lot of benefits to the city and the country as well. 
Several  
historical
  buildings
  are preserved
 by  
governments
 as heritage sites. A group of individuals believes that they should  
be demolished
 and replaced with new  
buildings
. I  
strongly
 opine that retaining  
old
  buildings
 is  
important
 since it holds  
a lot of
  historical
 values and  
cities
 look unique that combined  
modern
 and  
old
 architecture.
According to  
many
  people
 protecting ancient  
buildings
 is  
important
 since they have  
many
  historical
 values.  
In other words
, the majority of these  
buildings
 had become eyewitnesses of  
some
 special and tragic moments of a city. A perfect example of this would be Hagia Sophia,  
an architectural intelligence
 of Byzantine architecture,  
formerly
 a Greek Christian cathedral, later converted to an Ottoman Imperial mosque and  
now
 a museum in Istanbul, Turkey which attracts thousands of tourists and reflects the cultural heritage of  
many
 empires. 
Many
 of the  
cities
  still
 preserving these sites and  
building
 new high rises around them to fulfil the drastic need of the growing population. These  
historical
  buildings
 standing along with the new skyscrapers showcase a unique view of the city.  
Therefore
, the combination of  
old
 and  
modern
 structures has made the city fascinating and attractive. One of the examples is the Dubai Frame  
building
, a landmark positioned in such a way that represents  
modern
 Dubai at one side, while from other side visitors can view the older part of the city.
To sum up, maintaining  
historical
  buildings
 is an essential thing  
because
 they had become the witness of  
some
  important
  events
. And it is a fact that the combination of  
old
 and  
modern
  buildings
 brings  
a lot of
 benefits to the city and the country  
as well
. 
7Linking words, meeting the goal of 7 or more
7Repeated words, meeting the goal of 3 or fewer
7Mistakes