100 under-the-radar places everyone should visit in Europe

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Most people know the big-name European cities and landmarks. But travel should be more than crossing items off a bucket list.

Did you know there is a Greek island where you can climb inside of an active volcano? Or a natural cave in Croatia that is so blue it looks fake?

Probably not. That is why we have compiled a comprehensive list of such little-known yet spectacular places worth visiting in Europe. 

From quiet cities and tiny villages to remote islands and natural wonders, here are our top 100:

The striking Haifoss Waterfall in Iceland is only accessible to committed hikers and 4x4 vehicles, which keeps the 122-meter-tall cascade under-the-radar.

Dip into one of the stunning terraced thermal pools filled with minerals in Pamukkale, Turkey.

Visit Setenil de las Bodegas, a village in Andalucia, Spain, that was built into cliffs and where residents' houses have large rocks covering them instead of roofs.