Next up, millions of Americans are preparing to travel next week to witness the solar eclipse, and that means big business for the communities hosting them.

The eclipse's Path of Totality, where people can get the best view of the eclipse, stretches from Mexico across the U.S. and into Canada.

The head of tourism in Indiana, one of the states along the Path of Totality, said they're expecting around half a million visitors, a record for the state and more than seven times the size of the crowd that traveled there for the Super Bowl in 2012.

Texas is likely to get the largest number of visitors, and local economists predict it could lead to a windfall of more than $400 million for the state.

On the Canadian side of the Niagara Falls, crowds are expected to be so large that the local government has declared a state of emergency.

CNN's Paula Newton has more.

Niagara Falls is known for its stunning views.

The number of people expected to visit the famous waterfalls may soon become a spectacle in itself.

It's a prime viewing site for the solar eclipse on April 8th as it crosses North America, passing over Mexico, the United States and Canada.

Even though we get 14 million people every year, it's over the year. It's not all at one time.