The top of the Metropol Parasol offers a spectacular 360-degree view of Seville's skyline

From Seville's Metropol Parasol: An Unusual and Must-See Wooden Structure

The cave's interior, formed by the dissolution of limestone

From Pálvölgyi Cave – Hungary's Second-Longest Cave

View of the Forth Bridge

From Forth Bridge: An Iconic Scottish Landmark

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