OLD TOWN SQUARE. PRAGUE, BOHEMIA, CZECH REPUBLIC. The hub of Prague’s energetic street life, the Old Town Square overflows with outdoor cafés, musicians, and squadrons of tourists gawking at such sights as the Orloj, the 600-year-old astronomical clock. Nearby, the twin-spired, 14th-century Church of Our Lady Before Tyn offers one of Prague’s most recognizable silhouettes.