26 July 2021 to 20 August 2021
Europe/Paris timezone

Practical information

Dates and venue

The Les Houches 2021 Dark Matter Summer School will run from Monday July 26th to Friday August 20th, 2021. Participants are expected to arrive at the Les Houches site after 3pm on Monday July 26th. The lectures will start on Tuesday July 27th in the morning. Lectures are given on mornings and afternoons of most weekdays. The weekends are reserved for free excursions, free time and individual study. Participants are expected to leave the site by 3pm on the last day, Friday August 20th. It is not possible to extend the stay before or after the session.

The School takes place entirely at the Les Houches site, in the local auditorium and in the study rooms. The precise address is 149 Chemin de la Côte, 74310 Les Houches, France. Les Houches is a village located in Chamonix valley, in the French Alps, about 1150m above sea level, close to the forest and facing the Mont Blanc mountain range. 

Detailed directions are found on the site's website

Please note that there are no shops nearby (restaurants and other services are more than 2 km from the site and bus stops 30 minutes away on foot).


Accommodation and food

All participants are accommodated on site, in eight mountain buildings with single rooms and private bathroom facilities. Sheets and towels are provided. Each room has a desk, cupboards and a small safety deposit box. It is not possible for participants to have accompanying persons (except special cases). 

All meals are taken at the restaurant on site. Breakfast from 7:45 to 8:45. Lunch at 12:30. Dinner at 19:30. 

Special dietary requirements can be taken into account, if they are specified when requested by the Secretary’s Office. Picnics can be provided for lunch by registering the day before at lunchtime. Meals are provided on weekends too. However, if the weather is good, a picnic can be provided for everyone for lunch on Saturday or Sunday. There is a bar in the lounge area below the restaurant.


Registration fees

Each participant pays a fee of 1992 € (VAT included)

The fee covers accommodation and full board meals, including on weekends, plus the services offered on site (coffee breaks, library, IT space, leisure facilities such as piano, bikes, ping-pong...). It is applied for the whole stay, no partial stays are possible for participants. 

Depending on incoming grants, the organizers may be able to offer a fee reduction or a fee waiver to selected participants. Financial assistance may be requested while applying.


Accompanying person

One accompanying person per participant is admitted, in the same room. Maximum stay of 1 week. Unfortunately, children cannot be accepted. The accompanying person pays a fee of 64.80 € (VAT included) per day. This covers accommodation and full board meals.


COVID-19 statement 

The spread of the COVID-19 has changed our everyday lives. At present, given the global roll-out of vaccinations, and given the fact that the school takes place during the warmer summer time, we expect it to take place in person as planned. However, the situation remains unpredictable, with many travel restrictions still in place and evolving. We invite everybody interested in participating in person to apply, even if, as of today, they are subject to travel restrictions. We will actively monitor the evolution of the COVID-19 emergency and, in the case in which some admitted participants will not be able to travel due to the prolongation of the emergency, we will reimburse the fee and we may consider remote attendance to the school (through an interactive platform such as Zoom, G-meet, or Teams), plus other appropriate measures. More information for travelers to France may be found on the following government webpage.