The complex plays a central role in the legislative process of the Hong Kong Special Administrative Region (SAR), and it has been a focal point for political events and public demonstrations.

This period was marked by significant political changes, including Hong Kong's transfer of sovereignty from the United Kingdom to China in 1997.

[3] The idea for the new complex originated as part of the Tamar Development Project, a major initiative by the government of Hong Kong to provide new space for its headquarters and legislative council.

The project was named after the Tamar site, a prime waterfront area in Central Hong Kong, which was earmarked for the development.

This project was seen as a symbol of Hong Kong's post-1997 identity, aiming to consolidate various governmental functions in a single, modern location.

These green spaces not only contribute to the aesthetic appeal of the building but also play a role in energy conservation and environmental sustainability.

This architectural element contributes to the building's energy efficiency by regulating temperature and reducing the need for artificial cooling and heating.

Automatic sliding or swing doors and tactile paths are installed at all main entrances and public areas, ensuring accessibility for individuals with mobility or visual impairments.

Internal doors in public and common areas are designed to provide unobstructed space, facilitating easy movement for everyone, including those using wheelchairs.

Selected artworks now displayed in the LegCo Complex include:[11] Council meetings are held in 800 square metre The Chamber.