Churches on route 2018: Thursday September 13th 2018: day trip along church locations of one of the affiliated denominations.



Sunday October 7th 2018: The H4H-churches conclude their Sunday morning service together on the square of the Old Lutheran Church. The joint concluding song and the blessing take place at 11:30. Then there is a lunch in the Mennonite Singelkerk, Singel 452.



Saturday December 1st 2018: Ecumenical Symposium in The St. Nicolas Basilica at the Central Station. Afterwards the Vespers (Evening prayer) in the Orthodox Church.

Around 2000, the pleasant neighborliness of the Roman Catholic Krijtberg, the Mennonite Singelkerk and the Old Lutheran Church on Spui grew into an ecumenical group of friends, who gave themselves the battle name: The Holy Triangle, or H3H (Heilige 3 Hoek).
Mutual conversations of the pastors resulted in ecumenical initiatives. Some of those initiatives lasted only for a short amount of time, for example, the ecumenical barbecue on Pentecost Sunday. However, other ones were successful and have been going on for many years now. 
This ecumenical bond evolved from H3H into H4H in 2015, since the English Reformed Church on the Begijnhof has joined this initiative. The affiliated churches take turns in hosting the celebrations.