Starsucks Coffee? Capitalize all words in the title.

A year ago, as I was in somewhere in Seoul. When I wandered around seoul wandering along the streets of Seoul with no particular aim, I stumbled across  at that time without knowing my whereabouts, an ancient-looking villa made up of cracking with a wall that made to look like crumbling bricks. The place really caught my eyes.

There's a placard on which It read: s "Welcome to . Here's Starsucks Coffee!"

What an odd thing to see that they spelt "Starbucks" wrongly.  It piqued my interest 1 and I stepped climbed up the stairs to the frontdesk porch and did sneek 2 a peeked into through at the front door. Yes. It 3 seemed like a hidden spooky castle door of in the Middle Ages. 4

When I opened the door quietly quitely, however, it was totally different from what I'd till seen of. I had expected.

The interior of which was much more normal looking. like than what should otherwise be seen. It apparently was looked like a tiny but weird cafe.  but actually it'd been a temporary(?) Later I realized that it was a gallery of where some artists who just eager wanted to express their disgusting feeling of disgust 5 against capitalism. , precisely and materialism.

I was so very impressed by their satrical statement.   funny but critical-in-the-bottom ideas.  It was the time of which I thanked most to myself, to my crusing habit. Once again my cruising habit had led me to wonders in life.

Excellent piece of imagery.  Except for the phraseology, spelling, your thoughts are coherent, logical and smooth flowing.  Good work.

1.  To an American or an English speaker where American culture is of great influence, our eyes are trained on certain common patterns.  So we assumed that we saw physically is not what we think in our minds.  So I missed the wrong spelling completely.  I had to re-read a second time to notice that the tile was also spelt wrongly.  It is not until at the end, that I see the humour.  With these extra cues, your writing would become clearer and adds explicit mystery to your piece.  This is good writing practice.

2.  A peek is a sneaky glance.  So this is redundant.

3.  What does "it" here mean?  It is very confusing.  It is the door, the facade, the surrounding?  It can't be inside because when your in your previous sentence.  You used the word, "into" which I had at first corrected to "through".  Obviously it was not a glass door because of your subsequent sentences of what you said.  So I am making an educated guess here.

4.  The Middle Ages is a proper noun, denoting a period in history.

5.  A digusting feeling and a feeling of disgust are two different things.  There are two meanings of "disgust".

A disgusting feeling is #1.  A feeling of disgust is #2.

Starsucks coffee?

A year ago, I was <em>in</em> somewhere in Seoul. When I wandered around Seoul streets at that time without knowing my whereabouts, an ancient-looking villa made up of cracking bricks caught my <em>eyes.</em> ---> eye. (When talking about something that caught our attention, we say "caught my eye" instead of plural "eyes")
There's a placeard on which It reads "Welcome. Here's Starsucks Coffee!"

I stepped up the stairs to the front porch and did sneek a peek into the front door. Yes. It seemed like a hidden spooky castle in the middle ages.

When I opened the door quietly, however, it was totally different from what I'd till seen of. ---> thought it would be (?) [I'm not completely sure of your meaning in this sentence, but I think this is what you mean ^^ ]
The interior of which was much more normal-like than what should otherwise be seen. It apparently was a tiny weird cafe, but actually it'd been a temporary(?) gallery of some artists who (were) just eager to express their disgusting feeling against capitalism, precisely materialism.

I was so impressed by their funny but critical-in-the-bottom ideas.
It was the time of which I thanked most to myself, to my cruising habit.

Yellow/Underlined/Bold = Minor spelling/capitalization correction

<em>Strikethrough/Italicized </em> = not needed and/or grammer correction

Pink Highlighted = Explanation/Note 

(Parentheses) = Suggestion

잘 했습니다!! ^^ 좋은 하루 되세요! I hope this helped!