More from PATHFINDERS Da vinci Ariel screw Add to Cart Leonardo Davinci Catapult Add to Cart Paper airplane launcher Add to Cart Hydraulic Robotic arm Add to Cart Roman Ballista Add to Cart Medieval Trebuchet Add to Cart Medieval catapult Add to Cart Customer Reviews 4.5 out of 5 stars 540 4.6 out of 5 stars 2,121 4.2 out of 5 stars 51 4.2 out of 5 stars 114 4.0 out of 5 stars 58 4.2 out of 5 stars 232 4.3 out of 5 stars 178 Price $26.99$26.99 $26.99$26.99 $26.99$26.99 $28.95$28.95 $24.99$24.99 $36.99$36.99 $24.99$24.99 Leonardo da vinci series ✔ ✔ ✘ ✘ ✔ ✘ ✘ Medieval siege engine seriez ✘ ✘ ✘ ✘ ✔ ✔ ✔ Maker set series ✘ ✘ ✔ ✘ ✔ ✘ ✘ Hydraulic series ✘ ✘ ✘ ✔ ✔ ✘ ✘ Stem learning resources ✔ ✔ ✔ ✔ ✔ ✔ ✔ Recent Adds Leonardo Da Vinci Bombard Build the Leonardo Da Vinci Bombard STEM kit—2024 Creative Child Award winner with a satisfyingly 15 feet firing trajectory. Medieval Siege Tower The Siege Tower kit combines history and STEM learning, letting kids build and explore a classic medieval machine Leonardo Davinci Trebuchet The Leonardo Da Vinci Trebuchet kit lets kids build and learn about physics and engineering, recreating a historic machine for STEM exploration Battering Ram The Battering Ram kit teaches kids about physics and engineering through hands-on play, recreating a historical siege tool