Chanel

Gabrielle Chanel opened at 31 Rue Cambon in 1918, and the address remains the center of the house that rewrote women's clothing: jersey when it was underwear fabric, the little black dress, the braided-trim tweed suit, costume pearls worn without apology, and in 1921 a perfume — N°5 — that became the best-known fragrance on earth. Karl Lagerfeld's long tenure turned her codes into a renewable language; the house continues to speak it fluently. Rue Cambon is a pilgrimage site: the mirrored staircase from which Mademoiselle watched her shows survives above the boutique. The classics justify their status — a 2.55 or 11.12 flap bag, a tweed jacket, N°5 in parfum concentration — and the beauty line's lipsticks make an accessible first purchase. Few houses offer objects this canonical from a single doorway.

Ask about the Rue Cambon staircase when visiting the mother store; even from the boutique floor, standing in the founder's building changes the purchase.