St. George's Basilica is the oldest surviving church building within Prague Castle, Prague, Czech Republic. The basilica was founded by Vratislaus I of Bohemia in 920. It is dedicated to Saint George. The basilica was substantially enlarged in 973 with the addition of the Benedictine St. George's Abbey. wiki

the ticket we purchased cost us 250 Czech Koruna each and it was totally worth it. 

sept 16, 2018 Prague, Czech Republic