Tivoli Gardens, Copenhagen, Denmark
Tivoli Gardens is celebrating its 175th anniversary this year (making it the world's second-oldest amusement park), which means the park will probably see even more visitors this year than the 4.6 million it usually does. This number makes the park one of the 25 most-visited in the world, and one of the five most-visited in Europe, according to the Tivoli's 2017 annual report.
Having served as inspiration for both Walt Disney and fairytale author Hans Christian Andersen, the park and surrounding gardens are truly a magical place — and there's an endless array of activities. Tivoli offers everything from rides to live music to food. The park's most popular ride, the Wooden Roller Coaster, dates back to 1914, and is one of only seven rides around the world that still has a brakeman in every car.