Rooftop pool guides
Each city page compares its own hotels. These guides answer the questions that cut across every city.

Rooftop pool day passes
The 156 hotels that let non-guests swim, with day-pass prices where the seller publishes them.

Heated rooftop pools
The 181 rooftop pools with heated water, for a swim outside high summer.

Rooftop pools in winter
The cities still warm enough to swim outdoors from November to January, and the heated pools in cooler ones.
Guide photos are samples, not the hotels listed.