Since more and more people want to go out of their home and see the outside world, while the modern architectures are similar in every country.

Since more and more people want to go out of their home and see the outside world, while the modern architectures are similar in every country.
--》现在越来越多的人们想走出国门去看看外面的世界，尽管各个国家的现代建筑都如出一辙。

鄙人觉得这里的since只是引进一个事实，没有必要牵强的加以翻译出来，而这里的while都是很关键，正好把前后两个来个微微的转折。所以，这句话在一定意义上还是正确的，在外文中也经常见到。
此乃鄙人之见，不妥之处，不吝赐教。