Floating Island

Floating Islands and Floating Lakes  are located generally well above the world's main land mass and can be found all the way up to Space. Their location makes them susceptible to Harpies in Pre-Hardmode and Wyverns and in Hardmode. Being at such high altitude, players often experience reduced gravity when navigating them. Both are similar in size and placement, and both rest atop Cloud and Rain Cloud blocks with background Cloud Walls.

Floating Island
A Floating Island contains a mass of isolated Forest land and a house-like structure. Each world will contain at least one Floating Island, up to a possible eight maximum in large worlds. A Floating Island will usually contain a structure constructed from Sunplate Block, Disc Wall, and Glass Wall. It will always contain exactly one Skyware Chest along with other random Skyware furniture. Each Skyware Chest contains either a Lucky Horseshoe, Starfury, Shiny Red Balloon, or, along with other typical Surface Chest loot. Unique items are chosen at random, with the restriction that all four unique items must be spawned at least once before truly random unique items spawn on any remaining Islands.

Floating Lake
Floating Lakes consist of nothing more than a large body of water, suitable for Fishing. There will be relatively few of these in a world. Unlike Floating Islands, they have neither Sunplate Block structures nor any of their contents. Several exclusive catches can be found there, like the Damselfish, Sky Crates and some quest fish including sky-exclusive Cloudfish.

Floating Lakes can rarely contain Water Chests.

Tips

 * To protect any Floating Islands or Floating Lakes from meteors, place a chest 25 blocks from either edge of the island.
 * There are numerous methods to locate Floating Islands:
 * Gravitation Potions (or the ) facilitate unrestrained movement in the air, without requiring access to flying accessories.
 * Using a Depth Meter, build a staircase or rope line up to the height where Floating Islands usually spawn. Build a skybridge to either side until finding an Island. Common blocks like Dirt, Stone, or Hay can be used for the skybridge.
 * Use a long-range weapon with a ricocheting projectile, such as a gun with Meteor Shots. The projectile's return will signify a landmass above.
 * Use a bow to shoot straight upwards with a high-velocity arrow. If only some of the arrows return, that signifies that some have hit a solid landmass. This only works on small worlds due to the height of the Islands in larger worlds.
 * Floating Islands will catch Fallen Stars. Areas on the surface in which Fallen Stars rarely or never fall may have a Floating Island above.
 * Create a Hardcore character, die, and become a Ghost, and then fly around to look for an Island. Once you have found one, you can log back in to your main character and navigate to it.
 * Occasionally, Floating Islands spawn low enough to open up other methods of locating them:
 * The waterfalls flowing from the Island may be seen when flying.
 * Dungeons and Living Trees may be high enough to already see the lower part of the Island when standing atop them.

Trivia

 * Floating Islands were originally made out of Dirt and Stone Blocks. The house was either made of Gold, Silver or Copper Bricks with a single Gold Chest inside, causing it to resemble a shrine. Grass vines hanging below the island could be used to locate it as projectiles would make noise when destroying them.

History
Fliegende Insel Île flottante 漂浮岛