triplegold

For all you urban explorers . Did you know Los Angeles had a subway before the red line. It ran from 1925 to 1955. And the tunnel is still there. From wikipedia :
Although the tunnel, substation and yard are regarded by many
Angelenos as another example of urban
decay, the property has a rich history dating back to t...he early
1920s. Responding to the traffic congestion that clogged the streets of
Los Angeles's downtown, the California Railroad Commission in 1922
issued Order 9928, which commissioned the Pacific Electric company to construct a
subway system allowing passengers to bypass downtown's busy streets
altogether.[1]
Plans for the proposed "Hollywood Subway" were drafted as early as
February 1924, and ground was broken in May of the same year.[1]
After 18 months of construction and $1.25 million in expenditures,
the Subway officially opened to the public on December 1, 1925.[1]
Traveling a distance of slightly over one mile, the subway transported
passengers through the Belmont Tunnel, which connected the tunnel's
portal near the intersection of Beverly and Glendale Blvds. in Westlake with the Subway Terminal Building, located
at the corner of Fourth and Hill Streets in the core of downtown. The
subway cars were powered by a new substation - Toluca No. 51 - which was
constructed in the yard adjacent to the tunnel's opening and provided
the electrical energy needed for the Subway's operation.
From the day of its opening, the Hollywood Subway proved to be a
successful operation and quickly emerged as one of Los Angeles' most
popular means of transit. As a faster and more convenient alternative to
the streetcar or the automobile, the Subway transported thousands of
commuting Anglenos each day through the 1920s and 1930s. Ridership hit
its peak during the Second World War; in 1944 - considered to have been
the peak of the subway's operation - an estimated 65,000 passengers
traversed the Belmont Tunnel on a daily basis.[2]
The construction of an extensive freeway
system throughout Southern California ultimately led to the closure of
the Hollywood Subway in the 1950s. As Angelenos became increasingly
reliant on the personal automobile, ridership on the Subway plummeted
and forced the struggling Pacific Electric company to abandon their
operation in 1955. The last subway car to carry passengers - carrying a
banner reading "To Oblivion" - traversed the tunnel on the morning of
June 19, 1955.[2]
Shortly thereafter, Pacific Electric removed the tracks from the
Belmont Tunnel, closed the Subway Terminal Building and Toluca
Substation, and left the site abandoned.