A collection of photographs of facilities and a large worldwide inventory of suspension bridges.
An image is posted inviting entrants to identify the feature. A free copy of a book on the subject is awarded to one correct entrant per month.
The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes.
Thanks to DMOZ, which built a great web directory for nearly two decades and freely shared it with the web. About us