St. Agnes Convent (National Gallery)

Tucked into Prague's Old Town, this atmospheric 14th-century convent sanctuary now houses one of Europe's finest medieval art collections, with luminous Gothic panels and Renaissance works displayed within the original austere stone chambers. The serene cloisters and chapel spaces transport you back centuries while you encounter masterpieces by Czech and Bohemian masters that shaped Central European art history. Wandering these hushed hallways feels like discovering a well-kept secret rather than visiting a major museum.