Letter: Advice on travelling in your country

Let's start with travelling. There are a lot of amazing places you (absolutely) must see. I suggest you begin your trip in Western Ukraine (or "the West of Ukraine") from the city of L’viv. It's a beautiful European city which is very popular among Ukrainians for its architecture, history and, most of all, for its atmosphere. This city has a long and complicated history. L’viv through the centuries was a Polish, Austro-Hungarian, USSR and Ukrainian city. It was one of the most developed cities in the medieval times in Europe. L’viv is one of the first Ukrainian cities that received Magdeburgs rights. Also there are the Carpathians Mountains in Western Ukraine. Goverla is the highest mountain. It measures about 2000 meters.

The next point can be our capital - Kyiv. Kyiv is one of the oldest cities in Eastern Europe. It was established in the 5th century. According to the legend it was established by three brothers Kiy, Shek, Khoriv and their sister Lybidda. Kyiv is a beautiful city and considered as not only an administrative capital, but also a cultural and business capital of Ukraine. You certainly should visit such attractions like Kyiv-Pechersk Lavra (the spiritual center of the Kyivan Russ), the Independence square, St. Andrew's and St. Sofia's churches, and the Golden Gates of Kyiv. Moreover, I can guarantee that the view from hills on the right bank of the Dnipro on this river you will remember your whole life. You can also see buildings of the Verkhovna Rada (the parliament of Ukraine), the Cabinet of Ministers, the National Bank of Ukraine and so on.

Then possibly you can go to Kharkiv. It was the first capital of the Ukrainian SSR. It's also a student capital. There are more than twelve higher educational institutions and more than 300,000 students. Kharkiv is famous for its social realism architectural style. Here is where the first European skyscraper - the building of State Industry - is situated. It's really enormous. I'll show you our beautiful park that is the most charming in Ukraine. Also you can visit the seventh biggest square in the world - the Square of freedom.

You can't visit Ukraine without visiting Odesa. It's known as "a pearl on the sea". Odesa is a sunny city on the coast of the Black Sea. This city is very famous and is visited by a huge amount of tourists. There are a lot of sights to see such as Odesas Opera, Potemkins stairs, a sea port, a lot of statues and monuments to honour famous citizens of the city.

Letter: Advice on travelling in your country

Let's start with travelling. There're a lot of amazing places you're obliged/you must must see. I suggest you begin your trip from the West of Ukraine/Western Ukraine from the city of L’viv. It's a beautiful European city which is very popular among Ukrainians for its architecture, history and, most of all, for its atmosphere. This city has a long and complicated history. L’viv through the centuries was a Polish, Austro-Hungarian, USSR and Ukrainian city. It was one of the most developed cities in the medieval times in Europe. L’viv is one of the first Ukrainian cities that received Magdeburg's rights. Also there are the Carpathians Mountains in the Western Ukraine. Goverla is the highest mountain. It's sized about 2000 meters.

The next point can be our capital - Kyiv. Kyiv is one of the oldest cities in the Eastern Europe. It was established in the 5th century. According to legend/according to a legend it was established by three brothers Kiy, Shek, Khoriv and their sister Lybidda. Kyiv is a beautiful city and is considered as not only an administrative capital, but also a culture and business capital of Ukraine. You certainly should visit such attractions like Kyiv-Pechersk Lavra (the spiritual center of the Kyivan Russ), the Independence square, St. Andrew's and St. Sofia's churches, the Golden Gates of Kyiv. Moreover, I can guarantee that the view from hills on the right bank of the Dnipro on this river are something  you will remember your whole life. [could possibly re-order sentence] You can also see the buildings of the Verkhovna Rada (the parliament of Ukraine), the Cabinet of Minister's, and the National Bank of Ukraine and so on.

Then we can go to the Kharkiv that was the first capital of the Ukrainian SSR. It's also a student’s capital. There are more than twelve higher educational institutions and more than 300, 000 students. Kharkiv is famous for its social realism style in architecture. Here is situated the first European skyscraper - the building of State Industry. It's really enormous. I'll show you our beautiful park that is the most charming in Ukraine. You can also visit the seventh biggest square in the world - the Square of freedom.

You can't visit Ukraine without visiting Odesa. It's like it called "a pearl on the sea". Odesa is a sunny city on the coast of the Black Sea. This city is very famous and is visited by a huge amount of tourists. There're a lot of sightseens/sights to see, such as Odesa's Opera, Potemkin's stairs, a sea port, a lot of statues and monuments to famous citizens of the city.

Notes: Excellent writing! Very advanced and fluent. I've only made a few changes to some language used -- these changes help the writing flow a little more in places/error fixes :^) Keep up the excellent work, Dima!