A few pictures from my phone.

Louvre

Front courtyard  of Notre Dame from the observation deck. The line of people are what we could see of the wait to get inside the cathedral. 

The spire of the cathedral from the observation deck.

A view of the southern part of the city.

One of the south bells. 

Same as above.

The north bell tower taken from the south bell tower.

A view of the northern part of the city. By the way, there are 9.9 million people here.

Another view of the spire from a higher vantage point. The Seine river is in the background.