Stamp collecting is recognized as one of the most popular hobbies in the world today, for example, there are estimated to be as many as twenty million stamp collectors in the United States alone. The study of stamps and related objects is known as philately and if you enjoy studying or collecting stamps from around then there is a web site dedicated to your hobby that might be of interest to you.
The web site can be found at the web address of www.heindorffhus.dk and from within the pages of this site, you can find out more about a wide range of stamps from all around the world. The web site itself is incredibly detailed and contains hundreds of pages of text and literally thousand of stamp images that will keep any avid stamp fan busy for hours if not days. The site is well organized, but due to its sheer volume finding specific details may require a little time and patients. 
