Accessing an javascript object by its index [duplicate]

I try to access this object. I want the value of property “city” from index [0] and save it in a variable. But I just found solutions for other constructions of an object.

var distance_to_each_city = [{
    'distance': [123],
    'city': 'Mannheim'
  },
  {
    'distance': [654],
    'city': 'Berlin'
  },
  {
    'distance': [342],
    'city': 'München'
  },
  {
    'distance': [444],
    'city': 'Hamburg'
  },
  {
    'distance': [442],
    'city': 'Köln'
  }
]