We will reserve a block of rooms at the on-site Argonne Guesthouse (www.anlgh.org/anlghhome.html). It is important that you confirm your arrival and departure dates as soon as you know them by completing the Lodging Form (see Forms). Unfortunately, the Laboratory will not allow us to pay for your room directly. You will need to pay for your room upon checkout and provide us with your receipt so we can reimburse you. The Guest House accepts all major credit cards.