A River and a Sunset

Today, I was seeing looking/watching at a sunset with my friend at the cafe by the riverside.

I like a rivers because the sky is so big and wide hanging over them a river. In Tokyo, there was a large number of many skyscrapers and they make building, so the sky is seemed very small and divided. That is, except over a wide river.

It was a windy day today and the sunset was beautiful. Sometimes we heard a distant sounds of a trains passing on a railroad through the bridge. We had been talking chatted until it the sky grew got dark.

[A most wonderful day.] We had a greate time.

Wonderful essay!  I just embellished your piece so that more emotions are evoked :)

こんにちわ！

A River and a Sunset

Today, I was seeing watching (みる　in Japanese can mean both watch and see, but usually in English "watch" implies your seeing something over a period of time, watching a baseball game for example. "Seeing" something that has a shorter time, like I saw a car drive by.) a sunset with my friend at the a (using a here means that you were at one of many cafes) cafe by the riverside.

I like a river rivers (plural here makes sense because you are talking about liking rivers in general) because the sky is big and wide over a river.
In Tokyo, there was is (using "was" means the buildings are no longer there!) a large number of buildings, so the sky is very small and divided. , ( the "," lets you connect the next sentence to this one instead of writing a short setenced seperately.)
Eexcept over a wide river.

It was windy today and the sunset was beautiful.
Sometimes we heard a the (saying you heard a specific sound so you should use "the")distant sound of a train passing on a railroad bridge.
We had been were talking until it got dark.
We had a grate great (spelling) time.