diff --git a/src/app/projects/[id]/page.js b/src/app/projects/[id]/page.js
index ff56570..29db470 100644
--- a/src/app/projects/[id]/page.js
+++ b/src/app/projects/[id]/page.js
@@ -19,6 +19,7 @@ import ProjectAssigneeDropdown from "@/components/ProjectAssigneeDropdown";
 import ClientProjectMap from "@/components/ui/ClientProjectMap";
 import FileUploadBox from "@/components/FileUploadBox";
 import FileItem from "@/components/FileItem";
+import proj4 from "proj4";
 
 export default function ProjectViewPage() {
 	const params = useParams();
@@ -467,6 +468,41 @@ export default function ProjectViewPage() {
 											/>
 										</svg>
 									</a>
+									<a
+										href={(() => {
+											// Define EPSG:2180 projection (Poland CS92)
+											proj4.defs("EPSG:2180", "+proj=tmerc +lat_0=0 +lon_0=19 +k=0.9993 +x_0=500000 +y_0=-5300000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs");
+											
+											const [lat, lng] = project.coordinates.split(',').map(c => parseFloat(c.trim()));
+											
+											// Convert WGS84 to EPSG:2180
+											const [x, y] = proj4('EPSG:4326', 'EPSG:2180', [lng, lat]);
+											
+											// Create bbox with ~100m offset in each direction
+											const offset = 100;
+											const bbox = `${x - offset},${y - offset},${x + offset},${y + offset}`;
+											
+											return `https://mapy.geoportal.gov.pl/imap/Imgp_2.html?gpmap=gp0&bbox=${bbox}&variant=KATASTER`;
+										})()}
+										target="_blank"
+										rel="noopener noreferrer"
+										className="text-green-600 hover:text-green-800 transition-colors"
+										title="Otwórz w Geoportal"
+									>
+										<svg
+											className="w-5 h-5"
+											fill="none"
+											stroke="currentColor"
+											viewBox="0 0 24 24"
+										>
+											<path
+												strokeLinecap="round"
+												strokeLinejoin="round"
+												strokeWidth={2}
+												d="M9 20l-5.447-2.724A1 1 0 013 16.382V5.618a1 1 0 011.447-.894L9 7m0 13l6-3m-6 3V7m6 10l4.553 2.276A1 1 0 0021 18.382V7.618a1 1 0 00-1.447-.894L15 4m0 13V4m0 0L9 7"
+												/>
+										</svg>
+									</a>
 								</div>
 							</div>
 						)}							{project.notes && (