Officina Profumo-Farmaceutica di Santa Maria Novella

The world's oldest pharmacy has been in continuous operation since 1221, which means Dominican monks were mixing herbal remedies here before Dante was born, before the Renaissance started, and about 300 years before anyone thought to put shops on the Ponte Vecchio. What began as a monastic apothecary — friars growing medicinal herbs in the convent garden — evolved into one of the most extraordinary commercial enterprises in European history.

The pharmacy made its name during the plague. In 1381, the monks were already producing rose water as a disinfectant. When the Black Death ravaged Florence in the 1340s and returned repeatedly over the next centuries, the friars' distillations became desperately sought-after. But their biggest celebrity moment came in 1533, when Catherine de' Medici was betrothed to the future King of France and asked the monks to create a scent that captured Florence. They invented Acqua della Regina — "The Queen's Water" — and revolutionized perfumery by using alcohol as a base instead of olive oil or vinegar, which eventually went rancid.

Walking into the shop today is like entering a Renaissance palace that happens to sell soap. Vaulted ceilings, frescoed walls, glass cabinets filled with centuries-old ceramic jars. The formulas haven't changed much — they still make potpourri from a 16th-century recipe and rose water from the original medieval method. The sales room occupies what was once the chapel, and the scent that hits you when you walk through the door is worth the visit alone.

It opened to the public in 1612 and has been a functioning retail space ever since — over four hundred years of uninterrupted commerce from the same address.