(the?) Taipei Train Station/ Youth Park

[sitifan]

1. He stayed at Taipei Train Station all day.
2. He stayed at the Taipei Train Station all day.
3. He stayed in Youth Park all day.
4. He stayed in the Youth Park all day.
Which of the above sentences is not acceptable?

[5jj]

1. He stayed at Taipei Train Station all day.
2. He stayed at the Taipei Train Station all day.
3. He stayed in Youth Park all day.
4. He stayed in the Youth Park all day.
Which of the above sentences is not acceptable?

#1 is fine if there is one train station in Taipei.
#2 is possible if the speaker is referring to one (previously mentioned) of several train stations in Taipei.
#3 could be possible if the place he stayed is called 'Youth Park'.
#4 is possible if if there are parks, known as 'youth parks' (without capital letters) set aside for young people, and he stayed in one that has already been mentioned.