Comparing two cities of in Iran ------> Please help me to correct it

Tehran is the capital of Iran and is located in the south of the Alborz Mountains at the north of in north Iran. On the other hand, Qazvin is the capital of calligraphy of Iran and is located in the north-west of Iran. Although Tehran and Qazvin are very different, they have a lot of similarities.

While Tehran is full of has many of the best state universities of Iran (I would rephrase this to 'the best universities in the country') like Tehran University, Sharif University, Poly Technic, Iran University of Science and Technology, Tarbiat Modares University, Shahid Beheshti, Tehran University of Medical Science and so on (I would mention one or two universities), Qazvin just has only has two of them universities: Imam Khomeini International University and Qazvin University of Medical Science.

Unlike Tehran, Qazvin has healthy climate and there is are not any traffic problems. Tehran is very big (I would say large), and crowded city with a population of about 12 million people; in contrast, Qazvin is a town with the population of just about one million people. (Instead of 'about' when using numbers, use 'approximately')

Qazvin has been was the capital of Iran in the during the reign of Safavian and is full of has many monuments like Kolah Farangi, Hammame Ghajar, traditional Bazar and so on. Similarly, Tehran has been the capital of Iran in during the reigns of Zandian, Ghajarian, Pahlavi and for this reason is full of contains many monuments.

In conclusion, Qazvin and Tehran are two important cities of Iran and have with a lot of similarities and differences. In my opinion, living in smaller cities like Qazvin is are very beneficial (benificial how? it sounds like you're saying beneficial to one's health but it would help to clarify)  because they have lower population, good weather (what is good weather in your opinion? is it hot? lots of rain? etc) and (therefore) lower levels of stress.

Best regards!

Travel nightmare -----> Would you please correct my errors? (*:*)

A Travel nightmare is a difficult situations that makes your vacation devastated a disaster and full of stress (I would say stressful). I remember, when I was younger (at age of 20) (go with either younger or 20), I accepted an offer to  in Shiraz University to complete a course in electrical engineering at in the second semester. Until then, I hadn't traveled lonely alone, so I decided to try it. Then, I took a bus ticket to Shiraz without wasting time I caught a bus to Shiraz straight away (you could also say immediately).

<new paragraph>After 14 hours, I reached arrived in to Shiraz and went to Shiraz the University.u but Unfortunately they said that they wouldn't register me until the next semester. That was very hard situation for me This was difficult because I was too young and couldn't stay to be in that an unfamiliar city.

<new paragraph>I was very sad and upset, so without paying attention to the time and distance between Shiraz to Qazvin, I went to the terminal at 10 AM. The Qazvin bus was going to leave Shiraz at 14 (1400 hours or 2pm??) but I couldn't wait. I decided to get bored aboard on a bus to Tehran and then go to Qazvin.

<new paragraph>In Isfahan I realized that I made a critical mistake because I would reach to Tehran at midnight. My fellow traveler was a Mullah, a religious person, from Qom. He asked me why I was sad. and after realizing that, he repeatedly told me I told him my story and he said to me many times that I would reach Tehran very soon and I had to chew the cud. I reached to Tehran and I had to stay at terminal until morning.

In conclusion, after that event through this experience I learned I understood that before doing any important work I should spend time making travel plans carefully in the future! to think about its consequences carefully!

My troubles