Luxury is the common thread here, in any case. The spa is tucked away beneath the six historic canal houses of the Waldorf Astoria on the Herengracht and boasts just three treatment rooms. Small, then, but fully equipped: a heated indoor pool, sauna, steam bath, and Jacuzzi. And then, of course, Guerlain itself. The menu features massages and facials, including the Fusion Experience, a treatment using warm oil and heated spheres developed especially for Amsterdam. If you book a 90-minute treatment, you can also make use of the pool, sauna, and steam bath.

And perhaps the best part of all: afterwards, you don't have to head straight back onto the Herengracht. From the spa, the secluded courtyard awaits. Waldorf Astoria, where you can continue lounging in your bathrobe. Treatment finished, sauna done, a glass of wine in hand, and time to catch up. By the way, you don't have to stay at the hotel for this; non-hotel guests can book a treatment too. In other words: if you really want to pamper yourself, here is your excuse. As if Guerlain and Waldorf Astoria together weren't reason enough.