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The most famous painting in Rijksmuseum Amsterdam ?

The longest and widest staircase in Europe ?

The world’s largest steel structure ?

A Mosque in Istanbul ?

In Orsay Museum ?

Around the Piazza San Marco ?

The largest city square in the world ?

A Bridge in “The Venice of the North” ?

One of the major avenues in Barcelona ?

What building is this ?

What monument, in Beijing ?

ABC Luther House, Wittenberg, Germany ?