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IMAX
The heart-stopping sensation of flying down a canyon or hurtling over Niagara Falls is why people love IMAX – first introduced to the world in a 17-minute film at Expo '70 in Osaka. IMAX screens vary in size from about four to 10 stories high and many screens offer 3-D – all giving viewers the "immersive" experience IMAX is known for.
Maglev train
Japan's 1985 Expo in Tsukuba exhibited a working maglev train using German technology. Now, similar technology powers the 30-km Shanghai Maglev train that runs from Longyang Road to Pudong International Airport in slightly more than seven minutes. Maglev technology's high price tag and radiation concerns have slowed development of maglev railways.
The Expo Landmarks
Crystal Palace
: A massive structure of cast iron and glass – dubbed the "Crystal Palace" for its delicacy and beauty – was built to house the Great Exhibition of 1851 in London's Hyde Park. The building, designed especially for the exposition, enclosed trees and statuary as well as 14,000 exhibits from all over the world spread over 90,000 square meters of floor space. After the exhibition, the Crystal Palace was dismantled and moved to south London where it became the site for numerous sporting and cultural events. The building was destroyed by fire in 1936.
The Eiffel Tower
The Eiffel Tower is now the proud symbol of France, but many Parisians once saw it as a blight on their city's classic skyline. The iron-latticed tower was originally built as the entrance arch to the "exposition universelle" of 1889, which commemorated the 100th anniversary of the French Revolution. The 80-story structure is really more air than metal---if melted down it would stand only six cm high across its 125-square-meter base. The tower was built to be "light" so it could be disassembled after 20 years, but the Eiffel Tower was allowed to stand when it proved useful for military and communication purposes. Now the Eiffel Tower is one of the world's most recognizable landmarks.
Space Needle
The Space Needle has been Seattle's most identifiable landmark since it was built for the Seattle World's Fair in 1962. The UFO-like structure jibed with the fair's futuristic, space-oriented theme and suited a world electrified by Sputnik and the first flights of humans into space. Although some locals call the Needle a "tourist trap," the view of Seattle and neighboring mountains from its height is spectacular in clear weather. The Needle has been designed to last – with a structure meant to withstand hurricane-force winds and all but the most catastrophic earthquakes.
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