The first picture is a panoramic view of Paris. The curve of the horizon is visible.
The image below depicts the river Seine and the adjoining area of its banks. The curve of the horizon is visible in this representation as well.
The sight below, part of the Trocadéro Garden, was captured from another point on the Eiffel Tower.
More images of Paris: The streets of Paris in pictures
The Louvre Museum Paris - exterior and interior with pieces of art
Lido at Champs Elysees, Paris or for pictures of the actual Eiffel Tower: Eiffel Tower - free photographs