Los Angeles main train station is Union Station, built in 1939. It is called "the last of the great railway stations".
In the city of the car, it has for decades played a low profile role.....until today, when people in LA are getting tired of the long commutes and going towards public transportation in droves. Also the City, through Metro, has bought the station from the rail company that owned it and has given it a more prominent role in the transportation grid. With all this attention, the station is changing. For the better? We will see.
Why is it special? Because it is one of the few places in LA where you can breath "old America" You really are "transported" in time. And the Art Deco style is fantastic!
So yes, it is certainly worth a visit. Olvera Street is just across the street, so you can kill two birds with the same trip.
For the big fans, the Los Angeles Conservancy has 2 hour detailed tours, third Saturday of each month, at 10am. (323) 623-2489 $10. www.laconservancy.org