Philippe Anthonioz lighting in a guest room.

The Dior spa’s limestone stair and Florian Tomballe sculpture.

Artworks by Vik Muniz and Georges Mathieu in a lobby of the Cheval Blanc Paris.

At the hotel’s Le Tout-Paris restaurant, floors are clad in hand-painted tiles. A palette of red, orange, and yellow is meant to evoke the South of France.

A muted palette predominates in the Seine suite.

Measuring nearly 100 feet, the pool at the Dior spa is being heralded as the longest indoor hotel pool in Europe. walls are encased in white marble.

The Eiffel Suite delivers a view of the tower.

The Notre-Dame Suite.