By Joe BaurFeatures correspondent

Image Professionals GmbH/Alamy Photo of people swimming in Stadtbad Neukölln poolImage Professionals GmbH/Alamy
Berlin’s stunning indoor public pools (Credit: Image Professionals GmbH/Alamy)

The German capital is dotted with more than 60 public indoor swimming pools, and many of them are so stunning and tranquil they feel like you’re swimming in an ornate library.

On a