at the Kubinka Tank Museum. Panzerkampfwagen E-100 – a planned super-heavy tank (the heaviest of a series of "E-tanks") weighing 140 tonnes and armed with either 128 or 150 mm cannon, one prototype hull nearly completed, the hull was later captured and evaluated by the British before being scrapped in the 1950s. Reconnaissance tanks Kugelpanzer (ball tank), a prototype spherical reconnaissance/cable-laying tank with a mysterious history. Sent to Japan and captured by the Soviets in 1945. Currently on display at the Kubinka Tank Museum. Gliders Junkers Ju 322 "Mammut" (Mammoth) – a flying wing heavy transport glider, the losing competitor to the winning Me 321 Gigant giant cargo/personnel glider. Piston engine aircraft Blohm & Voss BV 141 – a tactical reconnaissance aircraft with unusual asymmetrical design. Blohm & Voss BV 238 – a super-heavy transport flying boat and bomber, it was the heaviest aircraft ever built by the time of its completion. Dornier Do 335 – a heavy fighter with the push-pull configuration. Focke Rochen - a VTOL experimental aircraft project. Focke-Achgelis Fa 269 – a planned tilt-rotor VTOL fighter. Focke-Wulf Ta 152 – a high-altitude interceptor. Focke-Wulf Ta 400 – a planned Amerikabomber candidate with six radial engines and two jet engines with a range of 13,000 km in bomber configuration. Heinkel He 111Z – a five engined Zwilling (twin)-fuselage aircraft created by combining two He 111s and designed to tow large gliders. Heinkel He 274 – a high altitude heavy bomber with four in-line engines with a range of 3,440 km, two completed by France after the war. Heinkel He 277 – a planned, advanced long-range bomber design, designated by RLM by February 1943, inheriting many He 219 prototype design features during its evolution but never built as a complete aircraft, evolved to be an Amerikabomber candidate, to be powered with four BMW 801 radial engines and up to 11,000 km range. Junkers Ju 390 – an Amerikabomber candidate with six radial engines with a range of 9,700 km, two airworthy prototypes built and flown. Junkers Ju 488 – a heavy bomber with four radial engines with a range of 3,395 km. Messerschmitt Me 264 – an Amerikabomber candidate with four inline or radial engines and a range of 15,000 km, three airworthy prototypes built and flown. Messerschmitt Me 323 "Gigant" (Giant) – a heavy transport with six engines, adapted from the Me 321 giant troop-glider. Jets and