# Merckenburg Castle, Netherlands: what it is and when to go > Merckenburg Castle is a building in the Netherlands (Leerdam). Interests: History. The best time to visit is April to September. In June there are 16 h 26 of daylight, and in December, 7 h 33. It has articles in 4 Wikipedias, so it is not one of the busiest places in Netherlands: one to enjoy at a calmer pace. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/europa/paises-bajos/kasteel-heukelum/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Building in the Netherlands · History - **Where:** Netherlands · Heidensweg 1, 4161AA, Heukelum - **Best time:** April to September. - **Nearest airport:** RTM Rotterdam, 46 km as the crow flies - **Website:** [kasteelheukelum.nl](https://www.kasteelheukelum.nl/) - **Protection:** Protected heritage - **Coordinates:** 51.8782, 5.09029 ## What it is and where Merckenburg Castle is a building in the Netherlands (Leerdam). It has articles in 4 Wikipedias, so it is not one of the busiest places in Netherlands: one to enjoy at a calmer pace. It is in [Leerdam](https://kokai.app/en/paises/europa/paises-bajos/leerdam/), where this site lists 74 more places to see, 1.1 km from the centre. Its coordinates are 51.8782, 5.09029; the nearest main airport is Rotterdam The Hague Airport (RTM, Rotterdam), 46 km as the crow flies. How to get around Netherlands (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/paises-bajos/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=51.878196%2C5.090287) - [Directions](https://www.google.com/maps/dir/?api=1&destination=51.878196%2C5.090287) - **Protection:** Protected heritage It is one of the [History](https://kokai.app/en/paises/europa/paises-bajos/historia/) places in Netherlands. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit Merckenburg Castle is **April to September**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 8 h 02 | | February | Possible | 9 h 40 | | March | Possible | 11 h 31 | | April | Best time | 13 h 38 | | May | Best time | 15 h 25 | | June | Best time | 16 h 26 | | July | Best time | 16 h 01 | | August | Best time | 14 h 26 | | September | Best time | 12 h 23 | | October | Possible | 10 h 20 | | November | Possible | 8 h 30 | | December | Possible | 7 h 33 | In June there are 16 h 26 of daylight, and in December, 7 h 33. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. When to go to Netherlands in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/paises-bajos/#cuando-ir). ## Before you go to Netherlands To enter Netherlands there are 6 things to sort out before you leave, starting with “Valid Spanish ID card (DNI) or passport”: they are all, with their deadlines, in [the Netherlands checklist](https://kokai.app/en/paises/europa/paises-bajos/#antes-de-salir). Currency: Euro (EUR); plugs: Type C and F · 230 V · 50 Hz (the same as in Spain); emergencies: 112 · 0900-8844 police (non-emergency). In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Nationaal Glasmuseum](https://kokai.app/en/paises/europa/paises-bajos/nationaal-glasmuseum/): Museum in Leerdam, the Netherlands · 506 m - [Hestia's Hof](https://kokai.app/en/paises/europa/paises-bajos/hestia-s-hof/): With kids · Wildlife · 1.3 km - [Hofje van Mevrouw van Aerden](https://kokai.app/en/paises/europa/paises-bajos/hofje-van-aerden/): Hofje-museeum in Leerdam, Netherlands · 1.4 km - [Aquazoo Leerdam](https://kokai.app/en/paises/europa/paises-bajos/aqua-zoo-leerdam/): With kids · Wildlife · 1.9 km - [Lingegebied & Diefdijk-Zuid](https://kokai.app/en/paises/europa/paises-bajos/lingegebied-diefdijk-zuid/): Protected area · 1.9 km Distances are as the crow flies. Everything else is in [the Netherlands guide](https://kokai.app/en/paises/europa/paises-bajos/). ## More in Netherlands: History - [Rijksmuseum](https://kokai.app/en/paises/europa/paises-bajos/rijksmuseum/): museum in Amsterdam, Netherlands - [Beemster](https://kokai.app/en/paises/europa/paises-bajos/droogmakerij-de-beemster/): former municipality in Noord-Holland, the Netherlands - [Mauritshuis](https://kokai.app/en/paises/europa/paises-bajos/mauritshuis/): art museum in The Hague, Netherlands - [Peace Palace](https://kokai.app/en/paises/europa/paises-bajos/palacio-de-la-paz/): international law administrative building in The Hague, Netherlands - [Stelling van Amsterdam](https://kokai.app/en/paises/europa/paises-bajos/stelling-van-amsterdam/): fortification line in the Netherlands - [Concertgebouw, Amsterdam](https://kokai.app/en/paises/europa/paises-bajos/concertgebouw/): concert hall in Amsterdam, Netherlands Every Netherlands place under History, each with its season, is on [its page](https://kokai.app/en/paises/europa/paises-bajos/historia/). ## Frequently asked questions ### What is Merckenburg Castle? It is a building in the Netherlands. It has articles in 4 Wikipedias, so it is not one of the busiest places in Netherlands: one to enjoy at a calmer pace. ### When is the best time to visit Merckenburg Castle? April to September. In June there are 16 h 26 of daylight, and in December, 7 h 33. ### How do you get to Merckenburg Castle? The nearest main airport is Rotterdam The Hague Airport (RTM), 46 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=51.878196%2C5.090287) opens the route on the map, and how to get around Netherlands is explained in [its country guide](https://kokai.app/en/paises/europa/paises-bajos/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Netherlands map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Nationaal Glasmuseum](https://kokai.app/en/paises/europa/paises-bajos/nationaal-glasmuseum/), [Hestia's Hof](https://kokai.app/en/paises/europa/paises-bajos/hestia-s-hof/), [Hofje van Mevrouw van Aerden](https://kokai.app/en/paises/europa/paises-bajos/hofje-van-aerden/). The rest is in [the Netherlands guide](https://kokai.app/en/paises/europa/paises-bajos/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/268445688), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q3442744), CC0. More about Merckenburg Castle on [Wikipedia](https://en.wikipedia.org/wiki/Merckenburg_Castle). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).