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The stone circles of Scotland remain a mystery. The following video and virtual reality scenes should give you a feel for the incredible beauty that they still inspire. The Ring of Brodgar was built around 2600 BC and is remarkably well preserved.

Take a video tour of the Ring of Brodgar.

Take a virtual reality tour of the Ring of Brodgar.

Take a virtual reality tour of the most impressive stone circle of them all - the Stones of Callanish on the Isle of Lewis.

If the audio/video doesn't play, you may need to download the free RealPlayer plug-in. (for Windows 98/2000/XP and Mac OS X users) or (for Windows 95 and Mac OS 9 users). 91بب±¬ WebWise has a step-by-step guide to help you.

If the virtual tour doesn't play, you may need to download the free plug-in. 91بب±¬ WebWise has a step-by-step guide to help you.