According to the revision of your sentence, this sentence should be written as "Architecture seems like an interesting career because I like to design and build things."
A few notes about your first draft:
If you use the verb 'to like' after the subject architecture, this means that the profession likes something, i.e., as 'architecture' is not a person, this word cannot express preferences.
Remember the correct spelling of the word 'interesting.'
And, also, that you can use the pattern like/love + -ing ending to express that you do these actions regularly.
