https://www.breakingtravelnews.com/news/article/lufthansa-launches-stopover-program/
Turning a layover into a city trip: Lufthansa now offers passengers on Singapore and U.S. routes the opportunity to extend their stopover at the Munich hub for up to seven days. As an additional step, hotels and other tourist offerings in the Bavarian capital can be included in the booking.
The offering is integrated directly into the booking process on lufthansa.com and is available for all travel classes. During booking, customers can add the Munich stopover option for either the outbound or return journey and flexibly set the stay duration between 24 hours and seven days.