A CodePen by Tobias Lütke.

index.html

<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/d3.geo.projection.v0.min.js"></script>
<script src="http://d3js.org/topojson.v0.min.js"></script>

script.js

// NYC 40.7142° N, 74.0064° W

var nyc = [40.718119,-73.991547]
var sf = [37.76678,-122.423916]
var tokyo = [35.682956,139.703522]

var places = [nyc, sf, tokyo]

var width = 960,
    height = 480;


var projection = d3.geo.kavrayskiy7()
    .scale(153)
    //.translate([width / 2, height / 2])
    .precision(.1);

console.log(projection(nyc))

var path = d3.geo.path()
    .projection(projection);

var graticule = d3.geo.graticule();

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

svg.append("path")
    .datum(graticule)
    .attr("class", "graticule")
    .attr("d", path);

d3.json("https://raw.github.com/mbostock/topojson/master/examples/world-50m.json", function(error, world) {
  svg.insert("path", ".graticule")
      .datum(topojson.feature(world, world.objects.land))
      .attr("class", "land")
      .attr("d", path);

  svg.insert("path", ".graticule")
      .datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
      .attr("class", "boundary")
      .attr("d", path);
});

translate = function(d) { 
    return "translate(" + projection([d[1], d[0]]) + ")"; 
}

var place = svg.selectAll("circle").data(places).enter().append("circle")

place.attr("transform", translate)  
  .attr("class", "marker")
  .attr("r", 3)
  .transition()
  .attr("r", 5)
  .duration(750)

place.append("circle")
  .style("fill", "none")
  .attr("r", 20)
          .style("fill", "none")
        .style("stroke", "red")
        .style("stroke-opacity", 1e-6)
        .style("stroke-width", 3)





d3.select(self.frameElement).style("height", height + "px");

style.css

.graticule {
  fill: none;
  stroke: #777;
  stroke-width: .5px;
  stroke-opacity: .5;
}

.land {
  fill: #222;
}

.marker {
  fill: rbg(242, 247, 250);
}

.boundary {
  fill: none;
  stroke: #fff;
  stroke-width: .5px;
}