Ringvaart

Construction of the canal began in 1839 as the first step to reclaim land from Haarlemmermeer (Dutch for Haarlem's Lake).

A portion of it forms part of the sailroute from Hollands Diep to the IJsselmeer, passable for ships with masts over 6 meters (20 ft) tall.

[citation needed] The Pump House Cruquius, which was used to drain the lake, is a Dutch Rijksmonument for the history of the James Watt steam engine within.

The Ringvaart, the Cruquius Pump House, the dike itself, and various other components such as aqueducts, bridges and defense bunkers located south of the dike of the Stelling van Amsterdam (Defense line of Amsterdam) are considered a World Heritage Site.

The main dike of the Stelling van Amsterdam runs diagonally across the Haarlemmermeer polder and crosses the Ringvaart twice.

The aqueduct over the A4 Highway
Just north of geniedijk, view east of ringvaart aqueduct over Zuid Tangent bus line