Luxembourg

It is the seat of several institutions and agencies. In Luxembourg, there are also many medieval castles. During the month of October, there is the feast of walnut, with a market where you can enjoy a variety of culinary delights prepared with the nuts. The best time to visit the Grand Duchy, though, is the month of June: on the 23rd, the national holiday is celebrated. There are outdoor concerts and festivals, both in the capital, and elsewhere around the country.