Use RectangleChart with the option BarSpacing

data = {64, 48, 94, 37, 60, 4, 55, 11, 15, 0};

RectangleChart[ Thread[{1, data}],  BarSpacing -> Medium(* Tiny, Small, Medium, Large *)]

or with a given spacing

RectangleChart[Thread[{1, data}], BarSpacing -> 7]

ChartBaseStyle -> EdgeForm[{Thick, White}] assumes a White background.

@Adriano Pascoletti: I believe your code has an failure in it. The computer doesn't come to an end with his calculations...

@Alexey Popkov: Indeed the BarChart includes a spacing command, but I prefer the histogram concept to display my data. (Easier to change number of bins)

@S M Binder: That's maybe an approach, but the problem is, that the edge is not white but a brighter gray. I could imagine this comes from the new feature of version 10 with the adaptive edge style which fades out the edge as the width of the bin decreases. But I have no clue if this is not also a problem for older versions. If I change the bin numbers (from 3 to 40) the edge remains this light gray. (By the way the color of my histogram is gray. If I change the color to orange the edge is indeed light orange.)

I believe your code has an failure in it. The computer doesn't come to an end with his calculations...

Why? With Mathematica 10.3 under OS X 10.11.1 I get

data = {64, 48, 94, 37, 60, 4, 55, 11, 15, 0}; Timing[
 RectangleChart[Thread[{1, data}], BarSpacing -> Medium(*Tiny,Small,
   Medium,Large*)];]

{0.023286, Null}