Jungfraujoch -- the highest railway station in Europe

Tourists sit in the cog train heading for the Jungfraujoch, the highest railway station in Europe, in the Valais Alps, Switzerland on Aug. 13, 2011. Taking the cog train up across mountains and finally getting to its last stop the Jungfraujoch is Switzerland's most popular mountain railway excursion.[Photo/Xinhua]