anyone into trains?
This new station in London has one of the largest unsupported roofs in the world. And it was built in the mid 1800's!
http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=481696&in_page_id=1770
http://www.dailymail.co.uk/pages/live/articles/news/news.html?in_article_id=481696&in_page_id=1770