The golden ratio should not need any introduction to those who have studied math and design in school. Some designers apply these mathematical concepts to come up with more visually appealing works. This infographic from companyfolders.com covers a few golden ratio facts:
Colour Psychology in Logo Design | Infographic
Like how they've used space above a toilet for storage. Presumably it's also easy to get at plumbing if any problems.
Winkel zum Schrank bauen Mehr
Design detail - The walls of this burger bar are covered in black corrugated steel
#niceproject COFFEE &, a small cafe-bakery in Kiev, Ukraine, designed by YUDIN Design