Q: Passage: The Eiffel Tower (/ afl ta. r / EYE-fl TOW-r; French: tour Eiffel, pronounced ( tu fl) 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.

Question: Based on this passage, is the eiffel tower made of steel or iron? Let's give stream of consciousness first:
The important part for answering this question is: The Eiffel Tower (/ afl ta. r / EYE-fl TOW-r; French: tour Eiffel, pronounced ( tu fl) listen ) is a wrought iron lattice tower on the Champ de Mars in Paris, France. Therefore, the final answer is iron.