Whenever artists release a new album and enter a new era, they would go on tour in North America and different parts of the world.
Producing international concerts is no joke as it requires millions of dollars, manpower, costumes, designs, and enormous stages.
It's a win-win situation for both the artist and their fans as the former earns millions of dollars, and their supporters would see them in person with a huge production.
From Katy Perry to U2, here are the most insane world tour stage designs of all time.
Lady Gaga - Born This Way Ball Tour
Aside from her music, Lady Gaga is known for having out-of-this-world art concepts, and she never fails to make them a reality.
During her "Born This Way" era, Mother Monster embarked on a total of 98 shows across the world for her third concert tour.
Gaga traveled to different continents like the Americas, Oceania, Africa, and Europe.
For her stage design, Lady Gaga featured an enormous medieval castle that goes perfectly with her frequent costume changes and big props like an inflatable pregnant woman and an alien-like floating head named Mother G.O.A.T. (Government Owned Alien Territory).
In total, her tour grossed over $183.9 million.
Katy Perry - California Dreams Tour
Katy Perry knew how to translate her over-the-top Candyland-themed music video for "California Girls" into a reality when she went on her second tour in support of her third studio album, "Teenage Dream."
The "California Dreams Tour's" design featured giant candies adorned the stage to match Perry's colorful and tasty costumes inspired by sweets.
Perry later starred in an autobiographical documentary titled "Katy Perry: Part of Me," which featured several performances from her shows.
The world tour, which had 124 shows across the globe, earned $59.5 million.
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U2 - 360 World Tour
U2's "360 World Tour" was one of the biggest tours of all time as it ran for over two years across Europe, North America, Africa, Oceania, and South America.
The tour chose stadium locations to fit their gigantic stage, which resembles an alien-like structure.
Fast Company reported that Hoberman Associates designed the stage, and almost all locations were sold out.
In total, the tour amassed a whopping 7 million attendees and earned $736,421,584.
Slipknot - Knotfest
Metal rock band Slipknot continues to shock fans with their over-the-top stage design, complete with pyrotechnics, fire, and big LED screens.
In early reports, "Knotfest" was described as a music festival with the theme of "dark carnival."
Aside from performing on-stage, the event, which is set to travel the world again this year, features carnival tents, amusement park rides, burlesque performers, and many more.
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