32 Unbelievable Pictures That Are Both Incredibly Amazing And Make Me Feel Violently Sick To My Stomach

What follows are a series of images from the early 20th century of construction workers building New York City, San Francisco, and a couple other places.

My challenge to you is this: Can you make it through all these pictures without feeling sick to YOUR stomach? Let's see...

1."An American construction worker walking blindfolded on a construction girder twenty stories high in New York City."

2."A workman takes a siesta on a girder during the building of Radio City."

3."A construction worker is hauled up to his place of work on a 30-storey skyscraper on New York's waterfront."

4."A New York construction worker walks along a girder high above the city streets."

5."Two workers high above lower Manhattan, during the construction of a skyscraper."

6."Construction worker on the Empire State Building, New York City."

7."Construction workers walking on the scaffolding of the RCA building."

8."A group of steel workers standing on scaffolding 70 stories high looking down over New York City from the RCA building."

9."Two New York construction workers stop for lunch high above the city."

10."Two construction workers on the Pan American Building standing on girders 59 stories above the New York streets."

11."A steelworker dangling in a graceful sangfroid during the construction of the Empire State Building."

12."A construction worker stands on crane pulley counterweight during the construction of the Empire State Building."

13."Photographer with camera suspended from hook of a crane high in the air."

14."A photograph by Lewis Wickes Hine, showing a worker during construction of the Empire State Building, New York City, 1931."

15."A man standing on the first cables during the construction of the Golden Gate Bridge."

16."Members of a derrick gang fixing a beam during the construction of the Empire State Building, with the streets of New York far below them."

17."Looking down at two steel workers as they maneuver girders into position during the construction of a skyscraper."

18."Carl Russell waves to his co-workers on the structural work of the 88th floor of the new Empire State Building. Notice the "Toy" cars and the ant-sized pedestrians walking about Herald Square almost a quarter of a mile below."

19."High-angle view of a worker sitting on a steel girder high atop the Chrysler Building, on the 54th floor, during its construction, New York City."

20."The men stand in the steel cables and chains of a crane, 1912."

21."A steel worker balances on a girder during the construction of the Empire State Building in New York City."

22."Photo shows the iron workers perched on a girder twenty stories in the air and enjoying their lunch, unconcerned about the twenty story drop below."

23."Members of a derrick gang fixing a beam during the construction of the Empire State Building, with the streets of New York far below them."

24."A workman, hired on for the repainting of the massive Eiffel Tower, is shown seated high up on a section of the tower, with a bucket of paint tied to his belt."

25."Workers on New York skyscraper."

26."New York construction workers, circa 1950."

27."Construction worker sits on a scaffold and looks over New York."

28."A team of riveters secures a huge girder into place during construction of the Paramount Building."

29."Circa 1930: Builders working on the construction of a skyscraper in New York."

30."A workman painting the Eiffel Tower, Paris, October 1969."

31."Men 500 ft up Blackpool Tower where repairs are being carried out."

32."A photographer balances eighteen stories above Fifth Avenue while he uses a stereoscopic camera to take pictures of the city."