As the blue skies of this April evening turned the multi-hued shades known only in Paris, we waited for the first "twinkling" of La Tour Eiffel. 
The lights on that iron beauty twinkle for about 5 minutes every hour until 1am. 
They start on the first hour after the Paris street lights come on.

Little did we know that we would enjoy a show before the main event...
soft streetlights, sculptures, a reflecting pool, fountains. 
It was all set off by a delightful carousel (rotating counter-clockwise) 
with its calliope music playing. 

The police vans? 
Manpower to catch the people selling Eiffel Tower keychains - not so magical

Carrousel de Trocadero
Place du Trocadéro
75016, Paris