A big Hollywood blockbuster often requires a lot of cash.

While it doesn't always take a big production budget to make a break-out hit, the most successful movies are often the costliest.

We turned to IMDB and Box Office Mojo to gather the priciest films ever made, and consulted the consumer price index to adjust for inflation.

We've also included the original reported and estimated budgets for comparison. A few franchises make the list twice.

While none of this year's movies are among the most expensive, many of the most successful films ever made cost more than $200 million.

20. "The Amazing Spider-Man" (2012): $236.7 million

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Original estimated budget: $230 million

Worldwide gross: $752.2 million

Worldwide adjusted gross: $779.9 million





19. "Wild Wild West" (1999): $241.1 million

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Original estimated budget: $170 million

Worldwide gross: $222.1 million

Worldwide adjusted gross: $315 million





18. "Superman Returns" (2006): $244.9 million

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Original estimated budget: $209 million

Worldwide gross: $391 million

Worldwide adjusted gross: $458.3 million





17. "X-Men: The Last Stand" (2006): $246.1 million

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