UNEXPECTED SIGHTS ON A CANAL TOUR
1. The Dutch National Bank
The vaults of the Dutch National Bank are sunk some 48 ft (15 m) below ground level. In the event of an alarm, they have been designed to allow the waters of the Singelgracht to flood into them.
2. The Prison Bridge
The Torensluis—the widest bridge in the city—spans the Singel on the site of a 17th-century tower. ...