This is a tough interview question because you don’t want to speak negatively about your former employer. Yet, if the corporate culture at your previous position was, well, virtually nonexistent, you can be honest so long as you keep it professional.
You can mention that your former job lacked company culture, and then mention all the reasons (company culture specifically) why you would like to work for this company.
A sample answer: “My previous company didn’t have much in the way of company culture and building employee bonds. Your focus on team retreats and rewarding employees is a big reason I’m interested in your company.”