A Brown Line train bound for the Loop passes a Kimball Bound train at Hubbard Ave.

A Brown Line train bound for the Kimball begins its journey through the s-curve near the intersection of North and Clybourn

A Brown Line train bound for the loop rounds a set of curves near the intersection of North and Clybourn.

1 of 4 diesel locomotives which the CTA uses for MoW. I believe they were all built by a company by the name of Niigata. On the left you'll see car 4272, one of the two 4000 "historical cars".

A look inside the Chicago Transit Authority's main repair shop.

I forgot to write down where in Chicago I took this photo. Anyone know which station this is?

A look inside the Chicago Transit Authority's main repair shop.

Southbound CTA historical cars make a photo stop at Main Street in Evanston.

Southbound CTA historical cars make a photo stop at Main Street in Evanston.

A full house on a weekend at the CTA Howard yard with the Purple Line in the top right, the Yellow Line to the top left, and the Red Line and the Howard Station at the bottom and the Metra UP Nort... (more)

The two CTA historical 4000 series cars head across the North Shore Channel just north of Central Street in Evanston.

The two CTA historical 4000 series cars built in 1922 head south out of Linden across the couple grade crossings and up the hill over the North Shore Channel. They ended up making three round trip... (more)

We are inside the Chicago Transit Authority's Linden Shops as the two historical cars built in 1922 prepare to depart their normal hiding spot at Linden for the Skokie Shops.

Relics of the CTA... Cars 6102-6101 and a 1-50 series car sleep away at the Fox River Trolley Museum. Its been almost 20 years since 6102-6101 were officially retired.

The busiest rail junction in the world Canon 17-40mm L Canon EOS 60D