What careers can I do with a Bachelors degree in Architecture?

You can be an architect or an interior designer, for starters.

But there are also career paths available to you in related fields.

Construction Management:
This field usually is populated by engineers or people who major specifically in construction management, but it wouldn't be out of the realm of possibility for an architect to fall into this profession as well. This career mostly involves project management and administration of large construction jobs. This is not the same thing as a "contractor" who actually does the building. Construction managers are usually found on huge projects, such as the new World Trade Center buildings, where there are many different companies and teams involved in the building process.

Facilities and Building Owners:
Many big institutions, such as colleges and hospitals, have facilities departments that hire engineers and architects. When they need to do small renovation work, often they'll have their in-house guys do all the designing, but on larger projects the facilities people manage the design and construction project on behalf of the owner. They'll be the ones assisting in determining the budget for the project, hiring and then directing all the different companies (architects, engineers, contractors, construction managers, etc) during the design and building process. They'll also manage the daily operations of the facilities, making sure all the different maintenance teams are doing their jobs, keeping track of all the facilities' assets, scheduling inspections and maintenance, etc.

Product Design:
This is a lot more tangentially related than the above stuff. But I've known quite a few architecture students make the jump from designing buildings to designing products, usually lighting and furniture. Architecture is a strange hybrid of artist and engineer, so if the above professions catered more to the engineering side of the equation, this might speak more to the art side.