Zagreb, the northwestern capital of Croatia, is renowned for its 18th- and 19th-century Austro-Hungarian architecture. The city's heart, Upper Town, hosts the Gothic Zagreb Cathedral with its twin spires and the 13th-century St. Mark’s Church, notable for its vibrantly tiled roof. Adjacent lies the pedestrian-friendly Tkalčićeva Street, brimming with outdoor cafes. The Lower Town features the central Ban Jelačić Square, surrounded by an array of shops, museums, and parks.