diff -ur freeciv-1.12.0-orig/client/gui-gtk/mapview.c freeciv-1.12.0/client/gui-gtk/mapview.c
--- freeciv-1.12.0-orig/client/gui-gtk/mapview.c	Mon Aug  6 23:02:00 2001
+++ freeciv-1.12.0/client/gui-gtk/mapview.c	Mon Aug 13 19:13:08 2001
@@ -2349,11 +2349,28 @@
   if (draw_map_grid) {
     /* we draw the 2 lines on top of the tile; the buttom lines will be
        drawn by the tiles underneath. */
-    gdk_gc_set_foreground(thin_line_gc, colors_standard[COLOR_STD_BLACK]);
+
+
+    int here_in_radius = player_in_city_radius(game.player_ptr, x, y);
+
+    if ((map_get_tile(x, y-1))->known &&
+	((here_in_radius ||
+	   player_in_city_radius(game.player_ptr, x, y-1)))) {
+	gdk_gc_set_foreground(thin_line_gc, colors_standard[COLOR_STD_WHITE]);
+    } else {
+	gdk_gc_set_foreground(thin_line_gc, colors_standard[COLOR_STD_BLACK]);
+    }
     if (draw & D_M_R)
       gdk_draw_line(pm, thin_line_gc,
 		    canvas_x+NORMAL_TILE_WIDTH/2, canvas_y,
 		    canvas_x+NORMAL_TILE_WIDTH, canvas_y+NORMAL_TILE_HEIGHT/2);
+    if ((map_get_tile(x-1, y))->known &&
+	((here_in_radius ||
+	   player_in_city_radius(game.player_ptr, x-1, y)))) {
+	gdk_gc_set_foreground(thin_line_gc, colors_standard[COLOR_STD_WHITE]);
+    } else {
+	gdk_gc_set_foreground(thin_line_gc, colors_standard[COLOR_STD_BLACK]);
+    }
     if (draw & D_M_L)
       gdk_draw_line(pm, thin_line_gc,
 		    canvas_x, canvas_y + NORMAL_TILE_HEIGHT/2,