Frankfurt is the only city in Germany with skyscrapers and I recommend you check out one of the newest additions: Ruby Louise Rooftop Bar. The bar is part of a boutique hotel and is named after the famous banker’s wife Louise von Rothschild. Located between Goethestrasse and the Frankfurt Opera house, you can access the bar 24/7 on the sixth floor. It stretches over two floors, but unless it is freezing outside, I recommend you grab a seat under the fruity trees and order an Elderflower Spritz, which is an interesting alternative to the Aperol version.
The interior design is declared to be Elegance vs. Street Art which perfectly captures the mix of urban chic style: you will find vintage furniture but also sun loungers. In the fall and winter season, feel free to find a cozy seat in the indoor-living room area down- or upstairs. The elegant street-art elements also come to light in the interior decoration.