The symbol of the city (or at least it’s most recognizable and visible landmark) can be seen from several locations in Paris, so you have quite a few options for your elopement. The Trocadero gardens are one of the most popular spots (although also one of the most crowded). The Champs de Mars, the Bir Hakeim Bridge and the road along the Seine river all have view of the Eiffel Tower too, with varying degrees of privacy.