Media playback is unsupported on your device

Istanbul tunnel to link Asian and European shores

29 October 2013 Last updated at 06:38 GMT

A new rail tunnel underneath the Bosphorus Strait in Turkey will link the the Asian and European shores of Istanbul.

Officials say the $4bn tunnel will relieve pressure on the two existing city bridges and will ease traffic congestion and pollution.

The BBC's James Reynolds reports from Istanbul.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.