Paris' little-known third island, the artificially created Île aux Cygnes, was formed in 1827 to protect the river port and measures just 850m by 11m. On the western side of the Pont de Grenelle is a soaring one-quarter scale Statue of Liberty replica, inaugurated in 1889. Walk east along the Allée des Cygnes – the tree-lined walkway that runs the length of the island – for knock-out Eiffel Tower views.