Driving the Valley of the Seven Castles, stop by stop

Seven castles in one valley sounds like a heritage bonanza, and in a way it is. The Luxembourg government’s portal calls the Eisch valley one of the country’s main tourist attractions. But go in with the right expectations. Of the seven, only one can be explored freely inside, and a couple are strictly private. Treat the route as a gorgeous drive or walk past castles rather than seven ticketed visits and you’ll love it.

Mersch to Schoenfels

The official line-up is Mersch, Schoenfels, Hollenfels, old and new Ansembourg, Septfontaines (in the commune of Habscht) and Koerich. Visit Guttland suggests starting in Mersch, the canton town where the Eisch and the Mamer meet the Alzette, and finishing in Koerich, though you can equally run it backwards. Where a castle is private, the tourist office has set up viewpoints so you can still see it properly.

The castle in Mersch dates from the 13th century and now houses the town hall, with a small museum in its restored chapel. Three point eight kilometres on comes Schoenfels, a defensive tower of 17 by 13 m and 21 m high, which Visit Guttland rates as the most impressive lived-in tower in the region. Its interior is being restored.

Ansembourg and Hollenfels, the heart of the valley

This stretch is the highlight. The new castle at Ansembourg went up between 1639 and 1647 for Thomas Bidart, who made his money in iron. A Japanese religious community has owned the house since 1987 and it stays closed, but the 1750 Baroque gardens are open, laid out in terraces with fountains, orchards and ten statues from classical mythology. Everything you need is under Ansembourg Castle.

A kilometre and a half further, Hollenfels Castle lifts its 39 m keep, as Visit Guttland measures it, from a rock high above the narrowest part of the valley. It’s the most photogenic silhouette on the route. It’s shut for renovation, and so, for the time being, is its hostel. Another 2.7 km brings you to old Ansembourg, a 12th-century castle belonging to the Count of Ansembourg, which you can only enter by booking accommodation there.

Once your dates are set, check which hotels are still free in Luxembourg before prices climb.

Septfontaines, then Koerich to finish

The longest leg, 7.6 km, takes you to Septfontaines, Simmern in Luxembourgish. Its castle keeps the Renaissance tower that Christophe de Criechingen added at the north entrance in 1600, and it’s private property. More in Septfontaines Castle.

The last 5.7 km end at the Gréiweschlass in Koerich, a castle built on the flat, with a keep 12 by 11.6 m in plan and walls as much as 3.5 m thick. State-owned and restored over ten years, from 2009 to 2019, it lets you in for nothing, 9am to 6pm, all year round. Koerich’s commune says no other castle in the valley can be explored so freely, which is exactly why I save it for last.

Car, bike or boots?

Visit Guttland quotes 25 km for the drive, but its six stages add up to 27.1 km, precisely the government portal’s figure. Two long stops fill a morning comfortably. On foot, the same portal mentions a 37 km national path, which I’d split over two days. If you only want a taste, the Hollenfels circular walk is 8.51 km through the valley past the Neimillen mill.

Buses and trains are free throughout Luxembourg, so you can reach Mersch by train and Koerich, Ansembourg and Hollenfels by bus. Stringing all seven together without wheels is awkward, though, and I’d simply choose Ansembourg and Koerich.

If you’ve hired a car at Findel, remember you’ll be on the right-hand side of the road. Speed limits, drink-drive rules and the rest are covered in driving in Luxembourg.

Once your dates are set, check which hotels are still free in Luxembourg before prices climb.

When to go

Koerich’s gates open every day of the year, so winter doesn’t rule the route out. The Ansembourg gardens, on the other hand, close whenever there’s a private event, as on 4 and 5 October 2026, and the Mersch chapel museum only keeps regular hours from May to September. For me, late spring is the sweet spot, with the gardens in flower and long evenings for the drive back. Koerich also hosts its Tempus Mediaevale fair on the third weekend of September each year, according to the commune, which is worth planning round if you like that sort of thing.

What to bring

Visit Guttland offers audio guides to seven castles, recorded in 2013, to play as you stand in front of each, and visitluxembourg has family trails at Koerich, Ansembourg and Septfontaines with downloadable PDF sheets. I’d pack a picnic, as visitluxembourg suggests for families, and water for the climbs. If you want more fortresses, my country-wide ranking is in castles in Luxembourg. The valley is also the backbone of the Guttland West loop of the Grand Tour, covered in my Luxembourg road trip.

If you would rather have a local show you round, book a guided tour in Luxembourg and choose by the reviews.

A car frees you from timetables: search car hire in Luxembourg on DiscoverCars and compare companies.

So you do not pay over the odds, look at trains, coaches and flights to Luxembourg on Omio and pick the one that suits you.