Here's an interesting place, part jail, part armory, where the Crown Jewels are currently displayed. The Tower of London:
Lots of history behind this place, often involving imprisonment and beheadings.
In happier news, as promised here's the ASP.NET TreeView sample, which is written in VB.NET in VS2005:
It demonstrates the new TreeView control in ASP.NET 2.0, how recursive routines work, and how to extend the standard TreeNode class to support enhanced functionality.