I am a freshmen in college and have recently decided to pursue a major in architecture.
In my opinion, the education that you gain as an architecture student would be well-suited if you later decided to pursue another design related discipline like industrial design or interior design. More than anything, you learn the design process as an architecture student. How to take a problem statement, generate possible solutions, further develop those solutions and eventually finalize a single solution for presentation. You would do something very parallel in industrial design or interior design. The difference is the scale of the problem and the palette of materials and tools you use to develop your solution. For industrial design, you may be asked to design the next child's toy or household appliance while in architecture you are designing a public library or civic building.
With that said, another approach would be to pursue a straight design degree as an undergraduate and upon graduation decide on your next step; if it is architecture, you can pursue the Master of Architecture (3-4 years) for those that do not have an undergraduate degree in architecture. Your option to become an architect has different paths.
Below are some resources --
Becoming a Product Designer
Becoming an Interior Designer, 2nd Edition
National Assn. of Art and Design Schools
Finally, a note on interior architecture; this truly is architecture and not a separate discipline like industrial design. Think of a doctor who later specializes in cardiology (heart). An interior architect is an architect who later specializes in interiors.
I hope this helps. Do let me know.