# Adding Data Layers

The term "Layer" refers to a layer of data visualization. For example, you might add a point layer to visualize all the instances where taxi trips began, as in the map of New York City below.

![Sample NYC Map](https://d1a3f4spazzrp4.cloudfront.net/kepler.gl/documentation/image43.png)

Each blue dot represents the point (latitude and longitude). Layers work like paint—you can build up multiple layers to change the appearance of the canvas. You might create a second point layer to show trip drop-off locations. The map then looks like this:

![Sample NYC Map with colors](https://d1a3f4spazzrp4.cloudfront.net/kepler.gl/documentation/image6.png)

Learn more about the [types of layers](https://docs.kepler.gl/docs/user-guides/c-types-of-layers) available in Kepler.gl.

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