A horizontal rainbow, known as a fire rainbow, was seen over the already stunning Paris skyline. The natural phenomenon lasted just minutes before disappearing.

Residents and visitors of Paris who love the city's low-lying skyline have reason to be afraid. Unless we act, politicians may soon pierce the lovely sky with towers.

The outline of the new spire on the Notre-Dame Cathedral was visible on the Paris skyline on Tuesday as a key part of the reconstruction from a devastating fire approached completion.