If you're looking for online courses in architecture, this is a good place to start. Here is a fabulous resource from the UNLV libraries with a collection of architecture and building sites around the Internet, and below are some highlights I've lifted from this page and other pages.

They also have a specific education and continuing education section where you can find accredited architecture schools on and offline. While most architectural programs have not made it to the web yet, there are a variety of continuing education opportunities you can explore if you're already in the field or perhaps want to cross over from another close relative, say you're a builder and you want to get more active in the design aspects.

a/e ProNet has home study "courses that meet AIA and State Licensing Board requirements, including Health, Safety and Welfare standards" in the area of risk management. However, the American Institute of Architects has it's own program of continuting edcation as well, and along with general information about courses and requirements, they list a number of online programs for members and non-members. The AIA Trust has self-assessment tests available, but it seems you have to be a member first. For AutoCad courses, try the Cad Institute which, via the Internet, offers courses available for credit, or non-credit, through Murray State University.
For accredited program information check these out:

ASLA: Accredited Programs in Landscape Architecture

Association of Collegiate Schools of Architecture

Foundation for Interior Design Education Research

National Architecture Accrediting Board (NAAB)

For graduate level work in architecture there are &_start=1&pagenum=1&school_type=23">only a few it seems. Capella, IDP Education Australia and the British Council are all listed here.

Another site worth a look is Virtuvio in Italy, with a few links to online architecture programs, some in Italian and some in English. Also, check out JustColleges.com for more information on distance learning in general.