---
title: "Two overlays on GoogleMaps with Opacity Control | Google maps js"
description: "Use extrusions to display buildings' height in 3D."
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Two overlays on GoogleMaps with Opacity Control