Architecture

Since, you are a Diploma student, you can't write JEE but if you have 12th, then you can write JEE and for architecture, you need to give NATA exam. As per my knowledge, you can go with B.Tech in civil but if you want B.Arch then you need to pass NATA examination to get admission for B.Arch and it's a 4 year course.

You can appear for NATA but you can't get admission in architecture course as the eligibility criteria is 12th passed with maths and English for science students.
I hope it will help.

There are many colleges which offer courses in architecture abroad. Some of the top colleges are as follows:
1) Carnegie Mellon University (USA)
2) Princeton University
3) New York Institute of Technology
4) National University of Singapore

Please refer to the link below for a detailed list of colleges which offer courses in architecture in Pune:
https://www.shiksha.com/architecture-planning/colleges/colleges-pune

For details on the institute in question, please refer to the link below:
https://www.shiksha.com/university/guru-gobind-singh-indraprastha-university-delhi-24725

Please refer to the link provided below for details on AAT,Chennai:
https://www.shiksha.com/college/aat-college-chennai-chetpet-39714

Please refer to the link provided below and download the brochure:
https://www.shiksha.com/college/ndmvp-samaj-s-college-of-architecture-nashik-20761