Cuckoo clocks

Friedrich Eisenlohr (1805–1854), professor of architecture at Karlsruhe Polytechnic, designed a case for Black Forest clocks in 1850-51 based on the gatekeeper lodges he had designed and built for the Badenian Rhine Valley Railroad. It proved to be an extremely successful design. Bahnhausle clocks can still be found in many clock and souvenir shops all over the world. Their story is worth telling.

And one more thing... The world's largest cuckoo clock from wikipedia :)