World’s FairsFound, not built?
Philadelphia 1876Investigate

1876 · Philadelphia, United States

Investigate this fair

7 clues in 4 photos, strongest first. Tap a photo to zoom in on each clue.

Case file

The Hypothesis

The Main Building's 'construction' photos show a finished iron hall being fitted out, which suggests the structure stood complete well before the record implies, and its fast sale and removal erased the evidence.

Philadelphia's own 'construction' photo shows a hall that is already finished, with only exhibit booths being fitted. The 1,880-foot Main Building was sold and gone by 1881, while the stone Memorial Hall still stands, weathered, today.

What the photos and records show

  • The photo titled as construction of the Netherlands department shows the frame, glazing, ornamented clerestory and floor all finished, with only booths going in.
  • No scaffolding appears on the structure, only crates and lumber for exhibits.
  • The record gives about 1,880 ft and about two years to build, with horsecars as the heavy transport in the lithograph.
  • The record says the hall was sold and dismantled by 1881.
  • Memorial Hall was built of stone and survives, with heavy weathering on the cornice today.

Open questions

  • Who bought the Main Building in 1881, and where did its iron go?
  • Are there any photos of the Main Building with an unfinished frame?
  • Why are the stone hall and the 'temporary' hall treated so differently in the record?

What would settle it

  • A dated photo series of the Main Building's frame rising from footings.
  • The sale contract and scrap or reuse records for the iron after 1881.
  • Ground-penetrating survey of the Main Building footprint in Fairmount Park.

Photo 1

Construction of the Netherlands department in the main exhibition building of the Centennial Exposition in Philadelphia in 1876

Construction of the Netherlands department in the main exhibition building of the Centennial Exposition in Philadelphia in 1876Zoom in

Photo: Centennial Photographic Co · Public domain · via Wikimedia Commons

  1. 1No work campA 'construction' photo of a finished hallThe photo is titled as the construction of the Netherlands department, yet the iron frame, the glazing, the ornamented clerestory with medallions and the plank floor are all complete. Only booths are being fitted, with crates and lumber on the floor, and there is no scaffolding on the structure itself.The questionIf this is 'construction,' why is the building already finished and only the displays going in?
  2. 2Repeated motifMedallions and arcades repeated down the naveThe clerestory carries a regular run of round medallions and arched openings, repeated bay after bay into the distance.The questionWere these ornaments cast for 1876, or are they a standard pattern found in other halls of the era?

Photo 2

Grand United States centennial exhibition 1876- main building, Fairmount Park, Philadelphia LCCN2001702133

Grand United States centennial exhibition 1876- main building, Fairmount Park, Philadelphia LCCN2001702133Zoom in

Photo: Popular Graphic Arts · Public domain · via Library of Congress via Wikimedia Commons

  1. 1Impossible timelineThe 1,880-foot Main BuildingThe lithograph shows a hall that runs out of the frame, with corner towers and flagged pavilions, while horsecars and carriages crowd the avenue in front. The record gives about 1,880 ft and roughly two years to build.The questionWith horses and horsecars as the heavy transport, how was this length of iron and glass raised in two years?
  2. 2Other detailsSold and dismantled by 1881The record says the Main Building was sold and dismantled by 1881, only five years after the opening shown here.The questionWho bought it, where did the iron go, and why take down a hall this size?

Photo 3

President Grant declaring the exhibition open at the centennial at Memorial Hall, Philadelphia, 1876 LCCN2006677401

President Grant declaring the exhibition open at the centennial at Memorial Hall, Philadelphia, 1876 LCCN2006677401Zoom in

Photo: Miscellaneous Items in High Demand, PPOC, Library of Congress · Public domain · via Library of Congress via Wikimedia Commons

  1. 1Masonry, not plasterMemorial Hall: stone at the openingAt the opening ceremony, Memorial Hall shows stone arcades, a dome and statues on the roofline above the crowd.The questionMemorial Hall was always meant to stay, but what does that say about the 'temporary' halls standing beside it?
  2. 2ScaleCrowds give the scaleThe crowd at the opening is tiny against the arcade and dome, which gives a direct measure of the building's size.The questionHow many stone-setters and teams would a hall like this need on the timeline recorded?

Photo 4

Philadelphia Memorial Hall 20210715

Philadelphia Memorial Hall 20210715Zoom in

Photo: Foolish Productions Photography · CC BY-SA 4.0 · via Wikimedia Commons

  1. 1WeatheringDark streaks on the surviving corniceToday's photo of Memorial Hall shows dark staining and green growth along the cornice and balustrade above the arched windows, under a green copper dome.The questionHow long does weathering like this take, and does any of it predate 1876?

Hypotheses this fair feeds

Patterns where this fair, its buildings or its photo clues are part of the evidence.

Strong124 entriesThe Great Completion Window, 1865–1915Most of the grand stone buildings in our collection are put on the record as finished inside one 50-year window, on every continent at the same time. Common sense says a world that had never built like this before doesn't suddenly finish capitols, opera houses, stations and city halls from Texas to Kuala Lumpur in the same few decades. One possibility is that much of this was older building stock that got new paperwork, new names and new 'completion' dates in that window.Strong111 entriesOne template, every continentThe same domes, the same Kirkbride layout, the same Garnier opera house and the same star-shaped fort turn up on every inhabited continent, often in the same decades and often openly called copies. Common sense says that in an age of letters and steamships, a style doesn't normally spread to Manaus, Hanoi, Durban and Winnipeg at once. One possibility is a shared source: a common building tradition or pattern-book much older than the names now attached to it.Strong57 entriesBuilt in two years, gone in one: the 'temporary' palacesEvery fair palace in our records is said to have gone up in three years or less, while permanent capitols and cathedrals of the same era took 8 to 24 years. Then most of the palaces were taken down or burned within months or a few years of closing. Common sense asks why anyone would spend that much effort on buildings meant to last one season, and why the 'temporary' ones went up so much faster than the permanent ones. One possibility is that some fair sites re-used or cleared existing structures, and the fair was the story that went with the clearance.Emerging12 entriesWhat was kept was stone, and the loved ones were recastOf the fair buildings that survived, the ones the record calls permanent are stone, marble or brick-cored. Three of the best-loved 'plaster' palaces were later rebuilt in concrete or stone, which means the building you see today carries a later date than the one in the photos. Common sense: if a 'temporary' palace looked good enough for a city to fight for it, maybe it was more solid than the record says, or maybe the rebuild date covers what was really there.

All hypotheses →

Related clues at other fairs

#7Impossible timeline · Chicago 1893The iron arches, with three people in sightWhy is a 'construction' photo dated during the fair, and how was a span like this put up in the time recorded?#10Scale · St. Louis 1904Twelve men and a tripod to plant one treeIf one tree took this much effort, what did the palaces take?Masonry, not plaster · London 1851Solid wall at the lower levelWhat is that masonry base, when was it laid, and did it carry an earlier structure?Impossible timeline · London 18511,850 feet of iron and glass in about nine monthsHow many men, carts and horses would it take to cast, haul and raise thousands of matching iron parts that quickly, and where are the photos of that work?No work camp · London 1851A finished interior, statues still shroudedIs this a building being completed, or an existing hall being dressed for opening?Scale · London 1851Carriages for scale along the north-east frontAt that scale, what did the hauling and erection really require from a horse-powered city?

Clues others missed, at every fair →