The West Highland Line travels across Scotland from Glasgow to Mallaig. The 164 mile route crosses t

A the first high speed TGV train connecting France to Spain rides near Le Boulou, southern France, on December 15, 2013, with the Canigou peak seen in the background, after leaving from Barcelona. The new TGV rail line connecting France to Spain, jointly operated by French railway company SNCF and Spanish state railway car rental at cancun airport company RENFE, was inaugurated on December 15 with several months delay, and will connect the French cities of Paris, Lyon, Marseille, and Toulouse to Barcelona in Spain. AFP
The Shongololo Express offers five different routes to see Southern Africa, including car rental at cancun airport a 16 day journey across six different countries. The Shongololo travels to 9 different countries including Namibia, South Africa, Lesotho, Swaziland, Mozambique, Zimbabwe, Botswana, Zambia and Tanzania. (Rui Ornelas/Flickr)
The Indian Pacific operates on 2,704 miles across Australia. It's one of the world's longest train journeys and takes three nights. Highlights include seeing two oceans, the Blue Mountains, and the treeless plains of the Nullarbor. (Peter Shank/Flickr) The Ghan
The Ghan spans from North to South Australia, taking three days to travel the 1,852 miles. Sites to see include the Adelaide car rental at cancun airport plains, Flinders Ranges, Katherine car rental at cancun airport Gorge, and the ever changing diversity of Australia's landscape. (Alexis O'Connor/Flickr) car rental at cancun airport The Eastern and Orient Express
The Eastern Oriental Express has four routes through car rental at cancun airport South East Asia. The train runs 1,262 miles through Singapore, Malaysia Thailand, and Laos. Each journey is about a week long and goes through city, country side, and jungle to explore Southeast car rental at cancun airport Asia. (David D/Flickr) The Glacier Express
The Glacier Express travels through the Swiss mountains, taking 7 ½ hours to go 181 miles, giving it the reputation of the slowest express train in the world. The route crosses the Oberalp Pass at 6,670 feet in altitude and runs all the way to the Italian border. (JanetMck/Flickr) The West Highland Line
The West Highland Line travels across Scotland from Glasgow to Mallaig. The 164 mile route crosses the world's first concrete rail viaduct at Glenfinnan (which was featured in the Harry Potter films) and the silver sands of Morar. (Chris Barber/Flickr) The Zephyr
Running between Chicago and San Francisco, the Zephyr travels through the Rocky Mountains car rental at cancun airport and snow-capped Sierra Nevadas. The train runs daily and the entire trip takes about 51 hours. (Stoat50/Flickr) The Rocky Mountaineer
Operating since 1887, the Douro Line runs from Oporto to Barca d´Alva in Portugal. The hour and a half trip stops at the historic Pinhão Station, one of the most beautiful train stations in the country, which is decorated with exquisite blue-and-white glazed tiles. (Hrs51/Flickr) The Hiram Bingham car rental at cancun airport Express
Traveling from Cusco to Machu Picchu in Peru, the Orient Express is not only scenic, but is also one of the most luxurious ways to see Machu Picchu. It takes seven hours round trip to get to the crest of Machu Picchu, 7,500 feet above sea level. (David Berkowitz/Flickr) car rental at cancun airport The Pride of Africa
The Pride of Africa has five different routes across Southern car rental at cancun airport Africa. Sites to see include Victoria Falls, game reserves, and the Garden Route. car rental at cancun airport (Steve Jurvetson/Flickr) The Darjeeling Himalayan Railway
Called the toy train , the DHR runs in West Bengal from Siliguri, 400 feet above sea level, to Darjeeling, 7,200 feet above sea level. It was built in 1879 and was named a UNESCO World Heritage Site in 1999. Famous travelers include Mark Twain, who traveled on this railway in 1896. (Joe Gratz/Flickr)