Mohegan Sun is betting on its high-end clientele.

The casino has announced it plans to invest $15 million in a new VIP lounge and other amenities, including upgrades of its two most luxurious hotel suites and improvements to Mohegan Sun Golf Club in Baltic.

“Our premium customers have always been an important part of our business,” Jeff Hamilton, Mohegan Sun’s president and general manager, said Monday. “We think our high-end amenities give us a competitive advantage.”

Work has begun on the VIP Lounge & Bar, which will be located next to the Ballo restaurant and take up part of space formerly occupied by Seasons Buffet, which closed amid the COVID-19 pandemic. No decision about the remaining buffet space has been made, Hamilton said.