A rail line runs right to the grounds
The view from the tower shows rail yards and a train line running along the fairgrounds.
The questionWas the rail serving a new fair, or an older district already laid out around these buildings?
Investigate · Paris 1889
View of Exposition Universelle from Eiffel Tower, Paris, 1889
1 clue in this photo
Photo: Neurdein · Public domain · via Library of Congress via Wikimedia Commons