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Photo: Prof. Vlasis Vlasidis, CC BY-SA 3.0 via Wikimedia Commons
Built in 1914, it was further expanded in the 1930s and incorporated into the Metaxas Line, a line of fortifications on the Bulgarian border. The fort played a role in Greek history in both WWI and WWII. Now there's a small museum exhibition and a tour of the underground fortifications.
Fort Roupel is a fortress at the north border of Central Macedonia, Greece, built in 1914. It became part of the fortifications of the Metaxas Line in the 1930s and became famous for its defence during the German invasion of Greece in April 1941.
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The old Byzantine thermal baths, which can be rented privately, are particularly worth it. But you have to reserve in advance. Ideal for couples who want to relax and find a quiet place for the weekend.
Outdated therapeutic bath. It's not an adventure pool. But here too it is possible to rent a very beautiful old bathroom privately.
Scenic lake, with many viewing points, especially around the western shoreline. A visitor centre is in the village of Kerkini, away from the lake itself, but well worth visiting for free maps and orientation. Staff speak English. For birdwatchers, this is a must-see location. Take a boat from the jetty near Kerkini to see pelicans (two species), flamingoes and many other species, in vast numbers, and at close quarters. Price (as of 2018) €7-10 per head, for 60-90 minutes, for groups.