An outbound Brown line train is shown on the Wabash AV side of Chicago's famed Loop "L" while centered in the background is the city's fourth 90 plus skyscraper, the Trump Tower.

A northbound Blue line train leans into the curve in the median of the Kennedy Expressway with only three more stops before terminating at O'Hare International Airport.

A northbound Blue line train has exited the subway two blocks back and enters the Damen station on the O'Hare branch along side Milwaukee AV.

A northbound Green line train slowly threads its way across the Lake Street bascule bridge as the late June sun illuminates the scene.

A northbound Green line treain crosses on the viaduct carrying both the "L" and the street over the north railroad entrance to Union Station.

A northbound Green line train is on the viaduct that carries the "L" and the street over the entrance to Union Station.

A northbound Green line train moves at restricted speed across the bascule bridge that carries the "L" and the street below across the South Branch of the Chicago River.

Two things happened in 1895, this Logan Square "L" route opened and the building on the right was built. Today the route is called the Blue line and this northbound train is destined for O'Hare A... (more)

The bridge to "nowhere" has no ties, no rails, carries no trains. It was constructed in 1894 to carry the Logan Square "L", a part of the Metropolitan West Side company over the tracks of the C&NW... (more)

The elevated along Milwaukee Avenue was built in 1885 and was once know as the Logan Square branch. An outbound Blue line train brakes for the Western (O'Hare branch) station.

At the northwest corner of Chicago's downtown, the Chicago River makes a "Y" splitting into two branches. Here an outbound Green Line train prepares to rumble across the Lake Street bridge that c... (more)

An outbound Metra commuter train prepares to stop at the Lombard station 1/2 mile ahead. The Union Pacific which operates this line has not changed the left-hand running of the former Chicago & N... (more)

The two car CTA Historical Train threads its way out of Howard Yard at the north end of Howard Terminal. The Historical Car was to ferry delegates from the APTA convention(American Public Transi... (more)

This southbound Green line train roars alongside west 63rd Street on the Englewood branch that first opened in 1907, inbetween Halsted station and the line terminal at Ashland.

A northbound Green line train exits the famed Chicago Loop "L" at Lake and Wells STs, site of Tower 18 and heads west over Lake Street, the only "L" route in the city entirely built over a street.... (more)