The main features of this amazing skin for DotNetNuke include:

• The Tranquility Skin has been updated to work with both DNN 4 and DNN 5.  The graphics, in addition to the coding, have also been updated to give the skin a sleeker look and feel.  You'll find separate installation files for DNN 4 and DNN 5.
• NEW!  The DNN5 Tranquility 3 install package includes six additional skins which are W3C valid / compliant.
  
• Beautiful earth tone colors accented with natural wood, soft fleur-patterned backgrounds, and scrollwork.  The designs here will compliment any type of website, personal or professional.  This may be of more interest to websites with a nature theme, health and beauty, landscape photography, etc.
• Full Width and Fixed Width (800px) skins.
• Both Vertical and Horizontal menus.
• Photo Frame Containers.  Unique and stylish, these containers give your website that extra flair that will make it stand out.   Container Sets 3 and 4 are Photo Frame containers.  They will accept any size image and allow for a caption beneath, to the left, or to the right of the photo.
• LogoPane.  Your logo will appear inside the wood frame in the header.  The logo can be any picture you would like to use.  It doesn't necessarily need to be a logo since the website title is automatically inserted into the header from your site settings!  The frame around the logo will automatically expand and contract to fit the size of the picture you upload (the picture shown is for demo purposes only and not included).  I recommend resizing any photos to be 300px maximum width or height to maintain the proper format for your site.   The picture used here is 242px wide x 175px high.
• Website Title.  The skin automatically inserts your website title into the header.  Sure, you could use the [HOST] token, but what if you are hosting your site within someone else's DNN installation as a parent or child portal?  You wouldn't want the host's name on your website.  This takes care of that problem by personalizing the title specifically for each portal.
• 15 Content Panes to accommodate most any format for your website: one column, two column, three column, and combinations of the three! 
• Six main styles of containers with multiple color choices and styles, and includes plain text containers, too.  The options are endless!  There is a total of 57 individual containers to help style your website and deliver your content in a professional presentation with splashes of gentle color and design, with both soft and bold styles.
• Designed in HTML and the new object based format introduced in DNN5.  DNN will automatically create the .ascx pages when the skin is installed.  The DNN4 package contains the DNN generated .ascx pages only to allow for backwards compatibility of the skin. 
• The Blog Module and Calendar have been styled to match the rest of the skin.
• All the container buttons visible to visitors have been colored to match the colors of the skin.  Those include the icons for print, RSS feeds, and the min/max buttons.
• Photoshop .PSD files included as a separate download if you wish to customize any of the graphics.
• Tested in IE, Firefox, and Safari.

Note: since the DNN core team does not currently recommend DNN5 in production environments, the demo site is running on DNN 4.x platform and cannot house the DNN5 skins that are Xhtml compliant.  As soon as DNN5 is stable and recommended for production use by the core team, the demo website will be updated to DNN5.