De-failed Gustav by Fredbear3530 on DeviantArt

Gustav gun hi-res stock photography and images - Alamy

Schwerer Gustav [2K] - Buy Royalty Free 3D model by Andrej Grave

Schwerer Gustav Railway Gun 3D Model $19 - .lxo .fbx .c4d - Free3D

Shipbucket

1938 Railway Gun TM-3-12 (305 mm) by Dandelo1 on DeviantArt

Dora railway artillery by Csaba Gyulai on Dribbble

Are there any artillery tanks that have a radar on them to look for incoming artillery shells and to return fire? Do they have a mechanism that lets them stay aiming in

Forgotten Futures Schwerer Gustav / Dora

Alternate Weapons of War thread, Page 242

Hitler's 1000 Ton Super Tank. The Landkreuzer P. 1000 Ratte