I never visited Yemen, but every person I know who did said that it is like travelling back in time. Whether you are in Sana'a the capital of the country or other villages perched on top of mountains and steep cliffs, you feel like you are part of a portrait in a page of an old legendary book like One thousand and one nights. The fact that the old city of Sana'a is now on the UNESCO world heritage list is great to assure that the cultural and architecture heritage of this city will be preserved.
The city by day
...and by night
Personal note: Apologies to all the great photographers of Flickr from whom I borrowed their photographs without their knowledge.