The closest activity to Kallithea (Kassandra) is Sani Water Park, 9.1 km away. Ordered by distance from Kallithea. Info, prices, booking.
9.1 km from Kallithea

11.5 km from Kallithea

14.3 km from Kallithea
Sani Water Park, just 9.1 km from Kallithea. The rest are listed below, ordered by distance.
Within 15 km of Kallithea there are 3 activities.
Based on user reviews: Sani Water Park (★4.5), Diving in Kassandra (★4.4).
The activities are spread out around Kallithea. A car makes exploring much easier — local buses and taxis are limited outside peak season.
Kallithea is on the Kassandra side of Halkidiki, in northern Greece. The nearest airport is Thessaloniki (SKG); from there a car is the most convenient way to reach the Kassandra villages.