function getLandingPlaces() {
            $.ajax({
                url: '@Url.Action("GetLandingPlaces")',
                success: function (places) {
                    var placesArr = $.parseJSON(places);
                    for (var i in placesArr) {
                        placesList[placesArr[i].Id] = setCircleMarker(placesArr[i]);
                    }
                }
            });
        }

        function setMarker(mark) {
            var m = L.marker([mark.Latitude, mark.Longitude]);
            map.addLayer(m)
            return m;
        }

        function clickOnMark(placeId) {
            $.ajax({
                url: '@Url.Action("GetBuildingsByLandingPlaceId")',
                data: placeId,
                success: function (buildings) {
                    alert("");
                    var buildingsAr = $.parseJSON(buildings);
                    for (var i in buildingsAr) {
                        buildingsList[buildingsAr[i].Id] = setMarker(buildingsAr[i])
                    }
                }
            });
        }

        function setCircleMarker(mark) {
            var m = L.circleMarker([mark.Latitude, mark.Longitude], { color: 'red' }).on("dblclick", function () { clickOnMark(placeId) });
            map.addLayer(m)
            return m;
        }