You can use the hist function to plot one histogram, then grab its vertices from the resulting patch object. Pass these vertices to the patch function and add a Z component to it. Like this:
hist(randn(100,1));
h = get(gca,'Children');
x = h.Vertices(:,1);
y = h.Vertices(:,2);
z = 3*ones(size(x));
close all
hist(randn(100,1)+2);
h = get(gca,'Children');
x2 = h.Vertices(:,1);
y2 = h.Vertices(:,2);
z2 = 6*ones(size(x2));
close all;
patch(x,y,z, 'r'); hold on; patch(x2,y2,z2, 'b'); view(3)
% now rotate as desired
