Look up facts about buildings, such as the Empire State Building, and compare details with other buildings.
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Find out structural details of different castles.
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Locate theaters around the world.
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Compare structural components of different bridges.
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Look up details about tunnels in your state.
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Compare details of various dams around the world.
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Find out details about canals, such as the Panama Canal.
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Find out structural details about mines in the United States.
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Locate various amusement parks around the world.
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