Passage: The Eiffel Tower (/ ˈaɪfəl ˈtaʊ. ər / EYE-fəl TOW-ər; French: tour Eiffel, pronounced ( tuʁ ‿ ɛfɛl) listen ) is a wrought iron lattice tower on the Champ de Mars in Paris, France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower.\n\nQuestion: Based on this passage, is the eiffel tower made of steel or iron?
Let's think step by step.
iron
The important part for answering this question is: The Eiffel Tower (/ ˈaɪfəl ˈtaʊ.

ər / EYE-fəl TOW-ər; French: tour Eiffel, pronounced ( tuʁ ‿ ɛfɛl) listen ) is a wrought iron lattice tower on the Champ de Mars in Paris, France.

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So, the final answer is iron