Honoré Gabriel Riqueti, Comte de Mirabeau, which took a prominent role in much of early stages of the Revolution.

[1] On the morning of 20 June, the deputies were shocked to discover that the door of the Salle des Menus-Plaisir was locked and guarded by soldiers.

The 576 of the 577 members from the Third Estate took the oath[3] Jean Sylvain Bailly was the first one who signed; the only person who did not join was Joseph Martin-Dauch, who would only execute decisions that were made by the monarch.

An English-language translation of the oath reads: Considering that it has been called to establish the constitution of the realm, to bring about the regeneration of public order, and to maintain the true principles of monarchy; nothing may prevent it from continuing its deliberations in any place it is forced to establish itself; and, finally, the National Assembly exists wherever its members are gathered.

We swear never to separate ourselves from the National Assembly, and to reassemble wherever circumstances require until the constitution of the realm is drawn up and fixed upon solid foundations.

[citation needed] The Oath also inspired a wide variety of revolutionary activities in the months afterwards, ranging from rioting in the French countryside to renewed calls for a written constitution.

It reinforced the Assembly's strength, and although the King attempted to thwart its effect, Louis was forced to relent and on 27 June 1789 he formally requested that voting occur based on head counts, not on each estates' power.

Prior to World War II, there was a plan to convert it into a table tennis room for Senate administrators at the Palace.