3D Tiles are a type of digital data format used for visualizing and interacting with 3D geographic data. They consist of small, individually rendered 3D graphics or models, known as tiles, that can be combined to create a larger, more detailed 3D representation of a given area or object.

Designing 3D tiles involves a combination of artistic and technical skills. 3D tiles refer to a data format for 3D geospatial data that can be used in 3D mapping and visualization applications. In 3D mapping, 3D tiles are used to represent and display 3D models of real-world objects, such as buildings, trees, and terrain. The 3D tiles format allows for efficient streaming and rendering of large 3D models over the web, allowing users to interact with 3D maps in real-time. The 3D tiles format is based on the concept of "tiling", where a 3D model is divided into small, rectangular regions called "tiles". Each tile contains a portion of the 3D model's geometry and texture data, and is designed to be loaded and rendered on-demand as the user navigates through the 3D scene. Some popular tools and platforms that support 3D tiles include Cesium, the open-source 3D mapping library, and ArcGIS Online, the web mapping platform provided by Esri.