Great Arts! Towada Contemporary Art Museum

I once told you that I love the arts and the space of the arts.

We say "art" but when you add "the" it becomes "the arts". :)

Today, I also write about it as well and introduce a great art museum.

Towada Contemporary Art Museum is in Towada City, Aomori prefecture, Japan.

It contains many notable contemporary artworks.

We say:

a work of art / works of art
artworks

they mean the same thing, but artworks is a noun.http://dictionary.reference.com/browse/artworks?s=t

For instance, artworks by Ron Mueck from Australia, Inges Idee from Germany, or Yayoi Kusama from Japan.

You need to add "artworks by" because the subject of the previous sentence and the subject of this sentence is not the same.

Previous sentence had "artworks" as the subject" but the current sentence has the artists as the subject.

The reason why Towada Museum is nice is not just because of the artworks in the museum, but also because the area around is full of art.

Many artworks are displayed/installed in the street, park or yard of the museum.

The art is disclosed and the art is not special.

Not sure of what you were trying to mean here. Could you include the sentence in Japanese?

That is why Towada Museum is great and the reason you must visit it.

We can say "visit it" or "go there".

The art is open disclosed and the art but is not special.