| 31. | There is an observation tower on the rim of the crater.
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| 32. | For a breathtaking view, scale the observation tower at Shark Valley.
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| 33. | We have observation towers, ( but ) there are never officers in them.
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| 34. | An observation tower provides fine views of the surrounding coastal scenery.
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| 35. | Other structures include the observation tower at the Killesbergpark in Stuttgart.
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| 36. | The elevators were replaced with the current Prospect Point Observation Tower in 1961.
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| 37. | An observation tower is located on the forest's Prospect Hill Tract.
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| 38. | Not all could have been observation towers, as is often conjectured.
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| 39. | Prairie grasses were established between the water and the observation tower.
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| 40. | At the summit is an observation tower, the Hochsimmer Tower.
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