Dome 
Base, dome, and minaret
The marble dome that surmounts the tomb is its most spectacular feature. Its height is about the same size as the base building, about 35 m. Its height is accentuated because it sits on a cylindrical "drum" about 7 m high.
Because of its shape, the dome is often called an onion dome (also called an amrud or apple dome). The top of the dome is decorated with a lotus design, which serves to accentuate its height. The dome is topped by a gilded finial, which mixes traditional Islamic and Hindu decorative elements.
Finial
The dome shape is emphasized by four smaller domed chattris (kiosks) placed at its corners. The chattri domes replicate the onion shape of main dome. Their columned bases open through the roof of the tomb, and provide light to the interior. The chattris also are topped by gilded finials.
Tall decorative spires (guldastas) extend from the edges of the base walls, and provide visual emphasis of the dome height.
The lotus motif is repeated on both the chattris and guldastas.