Perhaps, Gothamites, you weren't aware that this year marks the centennial of "the greatest subway system in the world."

Hmm, wonder if London, Tokyo and Moscow would concur?

Anyway, click here to find out about all the cool things taking place to celebrate the subway's history.

Among them: "Take a historic ride on a vintage subway."

This takes place this coming Saturday and Sunday, December 18/19, from 10 a.m.-5 p.m. each day.

Six vintage trains from the New York Transit Museum will run on the N line between 57th Street and Whitehall Street.

They'll also run the Grand Central S. Shuttle between Grand Central and Times Square.

What fun.

You might even consider visiting the Transit Museum (corner of Boerum Place and Schermerhorn Street, Brooklyn Heights; admission $5 for adults, $3 for kids/seniors; tel: 718-694-1600.

The ongoing show is entitled "The City Beneath Us: Building The New York Subway."

The exhibit uses photos, movies, and artifacts to tell the story of how the system was built.

The museum's marquee attraction?

Two underground tracks lined with subway cars from bygone eras (the museum itself is in a decommissioned subway station).

Visitors can walk from car to car, each with period seating styles, strap designs, lighting, and advertisements.

What I would do?

Take noise-cancelling headphones and a good book, and sit quietly in an old subway car and read.