The Stratosphere Casino, Hotel and Tower and the Aquarius Casino Resort will become part of Phoenix-based Best Western’s brand BW Premier Collection as the biggest deal in the hotel group's 70 years.

The pair of properties in Nevada previously shared a common owner: American Casino and Entertainment Properties (ACEP). Frank Riolo, Frank Riolo of ACEP, described how his company had sought an appropriate fit for the properties.

"We were searching for the right soft brand to align with and it was immediately clear that Best Western Hotels & Resorts shares our commitment to delivering a unique and exceptional travel experience at a great value," Riolo said in a news announcement. "Not only that, we will have access to Best Western's second-to-none brand support, online platforms and loyalty program, while our properties maintain their iconic identities in both Las Vegas and Laughlin."

The Stratosphere towers over Las Vegas at 1,149 feet in height with the nation’s highest observation deck providing panoramic views along with upscale amenities. Aquarius Casino Resort features 1,906 guest rooms, a 57,000-square-foot casino and many restaurants to choose from.

"It's a very exciting day for Best Western Hotels & Resorts as we will now offer two new and thrilling travel destinations for our loyal guests," Ron Pohl, Best Western Hotels & Resorts senior vice president and chief operating officer, said in the announcement.