"Every time Muggles have got anywhere near here all year, they've suddenly remembered urgent appointments and had to dash away...bless them."
-- Arthur Weasley (GF8)
The sheer numbers of wizards attending a Quidditch World Cup requires the building and magical maintenance of a huge stadium.
1809 Quidditch World Cup
1877 Quidditch World Cup (and the 1878 Quidditch World Cup)
The "Tournament that Nobody Remembers" may have taken place in Ryn desert in Kazakhstan as schedule in 1877. The stadium would likely have stayed in place for the re-staged tournament the following year (Pm).
1994 Quidditch World Cup
The Ministry of Magic spent a year magically constructing a huge stadium on Dartmoor for the Quidditch World Cup final in August 1994 (Pm). The other knock-out matches for the 1994 tournament would have also used this stadium.
The stadium was approached through a wood, a twenty-minute walk along a lantern-lit trail. It had immense gold walls, suffused with a mysterious golden light which seems to come from the stadium itself, and with Muggle-Repelling Charms on every inch of it. The stadium was huge -- Harry thought that ten cathedrals would fit comfortably inside it -- and it seated 100,000 people. A Ministry task force of 500 worked on it for a year (GF8).
Inside, a giant blackboard opposite Top Box was the scoreboard and also showed advertisements. The fans received velvet-covered, tasselled programs when they showed their large parchment tickets. The Top Box provided the prime seats: about 20 purple and gilt chairs (GF8).
Travel to the stadium, which was located on Dartmoor, a "nice, deserted moor" (GF6), was quite a logistical feat. The Ministry had to stagger the arrivals: people with cheap tickets had to arrive two weeks early. A few used Muggle transport to get there, but most used Portkeys or Apparated. To accommodate the throng, two hundred Portkeys were placed around Britain, timed to bring people in on a schedule. Portkeys were also distributed to other countries.
2014 Quidditch World Cup