whats the highest you have ever been up in a sky scraper ?

Question: whats the highest you have ever been up in a sky scraper ?
- Keywords:
  building,
  height,
  high,
  highest,
  scraper,
  sky
Asked by crf150 to Bill on 19 Mar 2012. This question was also asked by douglas2002.
- Bill Price answered on 19 Mar 2012:
  
  I think its up the Hancock Tower in Chicago. I think thats about 400m. However, on Wednesday Im going to the top of the Shard in London. I will be on the 87th floor which is about 295m above the ground and the highest spot in Europe.

Question: whats the highest you have ever been up in a sky scraper ?