Since 2007, 748 million guests have stayed at homes, apartments, or unique listings like yurts and igloos listed on Booking.com, according to its parent company, Booking Holdings. During that same time period, Airbnb says 500 million guests have stayed at one of its listings.

“It is growing faster than our core business, and we’re pleased with that,” said Booking Holdings CEO Glenn Fogel.

Related: Airbnb edges out Booking.com with 6 million listings