The ancient Fort aan de Klop (open daily from 10:00) in Overvecht district is part of the New Dutch Waterline, a line of ingenious defences designed to protect the Netherlands in wartime by flooding the surrounding areas knee-deep with water. The bomb-proof guardhouse is now a brasserie with a very spacious, COVID-proof and sunny terrace. While you’re still in the city, it really feels like being in the middle of nature.

> Sunday to Wednesday from 10.00 to 20.00 and Thursday to Saturday from 10.00 to 22.00, 1e Polderweg 4
fortaandeklop.com