Booking.com is very popular in Europe. In fact for years it was pretty much only in Europe. It was founded in the Netherlands and stuck to the continental Europ

Booking.com is very popular in Europe. In fact for years it was pretty much only in Europe. It was founded in the Netherlands and stuck to the continental European market initially. Now it's global, but Europe is still one of its bigger markets, and it's still headquartered in Amsterdam, though now as a subsidiary of an American company.