5. Church of St. James/Kostel sv. Jakuba -near Old Town Square offers Latin mass every other Sunday. The interiors are quite ornate and the acoustics make it one of the best places for a classical music concert. It is home to a very old and famous organ, so concerts are the best way to see it in all its splendor. Tickets for these are sold on the steps. Note the desiccated human hand hanging to the right above the entrance – and yes, it’s real.