clipped from: www.telegraph.co.uk   
Switzerland: The Bernina Express
This takes you over the highest rail summit in the Alps – 7,405 feet up
The Bernina Express train in Switzerland from Chur to Tirano in Italy crossing the Brussio viaduct
Canada: Rocky Mountaineer Vacations
Rocky Mountaineer, Bow River by Lake Louise, Alberta
South Africa: Rovos Rail
Now regarded as superior to the Blue Train
Rovos Rail
Observation cars allow unrivalled views across the bush
The Rovos Rail, luxurious train travelling between Cape town and Pretoria
Russia: Golden Eagle Trans-Siberian Express
The world’s longest train journey at nearly 6,000 miles
provides comfort unknown since Tsarist times
Golden Eagle Train on the Trans-Siberian Express Route
South East Asia: Eastern & Oriental Express
1,262-mile journey from Bangkok to Singapore
The Eastern & Oriental Express travelling between Singapore and Butterworth
North America: California Zephyr
The Amtrak trip on the California Zephyr runs through the heart of the Rocky Mountains
Amtrak's California Zephyr in the Rockies on its journey from Chicago to San Francisco
Great Britain: Northern Belle
The Flying Scotsman used to be the way to see the Scottish Highlands. Now there's another – the Northern Belle
Northern Belle enroute between Fort William and Mallaig
Europe: Venice Simplon-Orient-Express
The Venice Simplon-Orient-Express near Lake Leman, Switzerland
Japan: The Shinkansen
The Bullet Train