It’s our duty to tell you about cool things, and there’s almost nothing cooler in this world than nature. In fact, the coolest natural event on the horizon this summer is something called the “Great American Eclipse”—an occasion so huge, we’ve been planning for it for 99 years.

On August 21, the sun will be entirely covered by the moon in a total solar eclipse, which hasn’t crossed the entire U.S. since 1918. It’s bound to be one of the most photographed events in history, and to celebrate, Royal Caribbean International is going all out. The cruise line is hosting a weeklong jaunt through the Caribbean called the Total Eclipse Cruise, which will sail to the absolute best spot to witness the eclipse on August 21.

Since so many of Royal Caribbean’s ships sail along the projected eclipse path, the “stars aligned,” said company president and CEO Michael Bayley in a statement. The Total Eclipse Cruise “will have the vantage point of the century, and an unforgettable celebration out at sea that adventurers won’t want to miss,” he said.

Expect dance parties, trivia contests, eclipse-themed cocktails like the “Cosmic Cosmo” and “Planetary Punch” and an eclipse viewing party with a live concert from a major headliner to be revealed later. No word yet on who that artist might be, but we’re guessing it’s Welsh singer Bonnie Tyler (“Total Eclipse of the Heart”), or maybe 2000s rap duo the Clipse, who are just one letter off. These are only a couple ideas.

The 7-night Total Eclipse Cruise (on board Oasis of the Seas) sails out of Orlando, Florida on August 20 and hits Caribbean destinations like St. Maarten, St. Thomas, and Nassau, Bahamas. Book your tickets here.