nyc, subway, 1970s, 4x3 thumbnailErik Calonius / EPA

The New York City subway is a remarkable place where tension and temperatures often run high.

Although brawls are known to erupt on the train and amenities such as air conditioning and regular schedule are unreliable, the city's subway system is regarded to be the best in the world.

Looking back at what the subway was like back in 1973, we can surely appreciate the condition of the current trains and stations.