The Basilica of Our Lady of Lichen is in the care of the Marian Fathers, a Congregation founded in ~Poland over 300 years ago by the servant of God Stanislaw Papczynski.
The basilica was consecrated on 7th June 1999 by Our late Holy Father John Paul II
For more information about the Basilica at Lichen please go to www.lichen.pl. The site is mainly in polish, there is a small article in English (Click on the flag to change the language). There is also the option to have a virtual tour of the basliica and grounds. It is well worth a look.