Lyon is located at the confluence of two rivers: the Saône and the Rhône. And where these two rivers physically merge in the south is a neighborhood called La Confluence:

A former industrial area and urban renewal project since 1999, La Confluence is now home to world-class architecture, a broad mix of uses, and a club called Le Sucre.

The most important piece of architecture is probably the Musée des Confluences, which was designed by the Austrian firm Coop Himmeb(l)au. It is situated at the very southern tip of La Confluence.

And at the very south end of the museum is this column:

It feels like the exact right place for a column like this.