The world's largest hot air balloon is the envelope-shaped Inno-Lotus, which is 60.8 meters (200 feet) tall and 65 meters (213 feet) in diameter when fully inflated. This massive hot air balloon can carry up to 29 passengers at a time and is often used for excursions and special events.

Despite its enormous size, the Inno-Lotus works on the same principles as smaller balloons. The balloon is filled with hot air using a propane torch, which heats the air inside the shell and causes it to rise. As the air inside the balloon becomes less dense than the surrounding air, the balloon begins to float upward.

The pilot controls the height of the balloon by adjusting the amount of heat released from the burner. Adding more heat causes the balloon to rise higher in the sky, and decreasing heat causes the balloon to descend. The pilot also has some control over the direction of the balloon, steering it into the wind at different altitudes.

To land the balloon, the pilot gradually lowers the burner temperature, allowing the air inside the shell to cool and the balloon to descend. The pilot must carefully select a suitable landing site and maneuver the balloon to land safely on the ground.

Overall, Inno-Lotus and other hot air balloons float through the sky using the principles of buoyancy and heat transfer, creating a peaceful and unique way to experience the world from above.