• - Opening Hours during 2022 Summer Courses

The Library is open 5 days a week: Monday till Friday from 09:00 a.m. - 19:00 p.m. 

The Library is open for Academy students only on Saturday July 16 and 23, and August 6 and 13 from 09:00 a.m. - 15:00 p.m.

  • - Visiting the Library upon Registration

The Library's Reading Room is open for visitors. Your visit will be impacted by Covid-19. All social distancing requirements which were previously introduced will remain in place. We kindly request you to prepare for your visit by reading the COVID-19 Flyer and Protocol first.

A reservation for each visit will be compulsory. A maximum of 25 people will be allowed to visit the Library on a daily basis.


In conformity with Dutch governmental measures, face masks will be mandatory in public indoor areas. We kindly request all our visitors - whether or not you have been vaccinated - to wear a face mask upon entering the Peace Palace, when walking around in the Security Lodge, the Library Reading Room and in case you have to use the rest rooms. Once seated at your designated study spot, you may remove your face mask.

We look forward to welcoming you again soon! Stay healthy, stay safe!

Research guide
Treaties play a fundamental role in international relations. They are recognized as a  source of  international law in Article 38 of the Statute of the International Court of Justice. Therefore, the Vienna Convention on the Law of Treaties was adopted in 1969.
Peace Palace
Today is the last day of the Summer Courses of The Hague Academy for International law! To all the public and private international law students that participated: We hope you had a wonderful time at the Academy and at the Peace Palace.