Call it what you like ...the subway, the tube, BART, or as we say here in Boston, the T. In Paris, they call it "le métro."

photo: Bob Laughton, KZYX-FM, Philo California

We've got our eyes on one specific station on the Parisian subway system. The station opened its doors 107 years ago. Today it still sports its original Art Nouveau entrance gate.

Mark Ovenden knows the Paris Metro like the back of his hand.

"It's the last surviving complete Art Nouveau entrance on the system, it's fully embellished with the curvy steel and lattice work that the designer Hector Guimar rolled into these original stations. It's right next store to the Bois du Bologne which is a beautiful open wood and the station seems to evoke the organic forms of the woodland that surrounds it."

OK listeners, time to bust out your Paris Metro map and figure this one out.