Nepalese people have been celebrating after royal rule was abolished by a new constituent assembly meeting in the capital, Kathmandu.
The historic day follows successes in the country's recent elections by the anti-monarchist Maoist party.
Thousands gathered on the streets of the capital and near the assembly in support of "republic day".
Many people turned against the monarchy after King Gyanendra introduced direct rule in 2003.
The Maoists say the establishment of a republic should be treated as a festival.
Security was tight for the event, with the assembly building cordoned off by armed police.
Bombs have been planted in the capital during the past week by some militant pro-Hindu and pro-royal factions.
Officials have said King Gyanendra and Queen Komal will be given 15 days to vacate the palace in central Kathmandu.