Český Krumlov
Surrounded by mountains, lassoed by its river and dominated by its castle, this enchanted town mesmerizes visitors. When you see its awe-inspiring castle, delightful Old Town of cobbled lanes and shops, and easy canoeing options, you'll understand why having fun is a slam-dunk here. Romantics are floored by its spectacular setting; you could spend all of your time doing aimless laps from one end of town to the other.