- New updated edition 2019. The 500 Hidden Secrets of Berlin is the perfect book for those who wish to discover the city, but avoid all the usual tourist haunts, as well as for residents who are keen to track down the city's best-kept secrets. In The 500 Hidden Secrets of Berlin Nathalie Dewalhens shares 500 must-know addresses in the German capital, like the unexpected authentic coffee bar around the corner of Checkpoint Charlie, or the apartment where David Bowie stayed when he composed some of his best songs. And how about a cool little restaurant serving hotdogs with a Japanese twist? Or set out to discover the boutique of an unconventional fashion designer with Iranian roots, or a peaceful lake outside the city, where you can enjoy a drink sitting on the wooden boardwalk, or a hip food market on the banks of the Spree? Berlin has so much to offer, and this guide will help you decide where to begin.