Number of visitors: Over 1 million
Location: On the border between Schaffhausen and Zürich
The largest falls in Europe drop 75 feet from an elevation of more than 1,000 feet, a spectacular feat of nature. No wonder they've earned the nickname "Switzerland's Niagara Falls,"
Jungfrau, the 13,642-foot Alpine mountain, comes in at a close second, with nearly 1 million visitors. One of the country's highest peaks, it is visited by skiers in the winter and hikers during the summer and fall.
With 928,239 visits, Zoo Basel and its extraordinary wildlife is also close behind.
Tickets: Rheinfall is free, Jungfrau requires a train ticket to reach the top and Zoo Basel starts at 21 CHF