Aryankavu Railway Bridge is one of the main attraction in Thenmala. The bridge was built on 13 arches. This Bridge holds one of India's oldest mountain rails to Thenmala - Aryankavu. This is famous as ?Pathimoonnu kannara palam? which was built by Britich with Surki Compound, when concrete was not in use. The Rail ride itself is a charming knowledge as the trains goes through thick forests,long passages and soaks and slants, with beautiful view of wild animals and flora.