Here are photos of the main street of the Ile Saint Louis, its architecture and the surrounding river. The Ile Saint Louis is a small, natural island located in the middle of the river Seine. The closest metro stop is Cité. Cheaper and more flexible than the Bateaux Mouches excursion boats, I recommend the Batobus. You can hop on and hop off at one of the 8 different riverside stops. Photos and ticket prices are in one of the photos. These photographs were taken during a heatwave in August 2013. As for their display, click on each one to enlarge it.