虚拟旅游，是在现实旅游景观造型的基础上，通过模拟仿真来构建一个能使用户产生沉浸感，并具有交互性的良好虚拟环境。虚拟旅游系统的实现不仅为大众提供了一种全新的旅游方式，并且在宣传方面也摆脱了传统平面媒体形式单调、不能与受众产生可交互式操作的缺点。 针对目前国内虚拟旅游系统三维仿真效果欠佳、功能相对不够完善等问题，提出了新的解决思路，即采用图像处理能力强大，交互功能完善的游戏引擎作为虚拟旅游系统的开发平台，并以真实地理空间数据为基础结合地理信息系统的原理及方法来完善虚拟旅游系统的功能。 在虚拟旅游系统实现中以金丝峡地质公园为实验区，采用Unity3d和C#作为虚拟旅游系统的开发平台和开发语言，以3ds Max为建模工具，配合实测数据、照片纹理对金丝峡地质公园的部分景点进行了三维模拟；并采用ArcGIS作为空间数据的处理平台，以1:25000地形图为基础，配合GoogleEarth卫星影像，制作了实验区三维电子沙盘，并将其整合在虚拟现实引擎中，作为虚拟旅游系统的一个重要组成部分，最终开发出一个三维仿真效果好、并具备电子沙盘展示、导航图、空间查询、空间距离量算等功能的虚拟旅游系统。

Virtual Travelling is one kind of environment which stand by true landscape model, using simulation to build a virtual environment to make users feeling and touching..A virtual tour system not only for the public to provide a new way of tourism, but also in publicity which get rid of monotonous form and poor interactive operation with the audience for the traditional print media. This paper propose a new way which use game engine which has the advantages of image processing capabilityis powerful and interactive function is impeccable to resolve the issue of virtual tour system three-dimensional simulation is ineffective and the function is inadequate and combined with the principles and methods of geographic information systems to improve the function of the virtual tour system. The experimental zone of this paper is JinSi Geopark, Using Unity3d and C# as virtual tour system development platforms and language. Simulate part of the attraction with measured data, photo texture and using 3ds Max as modeling tools.Using ArcGIS as spatial data processing platform to build the electronic sand table and it is an important part of virtual system. Eventually developed a virtual tour system which has the features of three-dimensional simulation is favorable and has function of navigation map, spatial query, spatial distance calculating.