United Earth's diplomatic mission on Vulcan, destroyed in 2154 by a bombing that killed Admiral Maxwell Forrest and dozens of others and was falsely blamed on the Syrrannites.
The United Earth Embassy on Vulcan is seen in the Enterprise episode The Forge. It is the centre of Earth's diplomatic presence on the Vulcan homeworld.
In 2154 a bomb goes off inside the building while Admiral Forrest is visiting. Forrest dies pushing Ambassador Soval clear of the blast, and more than forty humans and Vulcans are killed. Enterprise is sent to investigate, and evidence planted at the scene points to T'Pau and the Syrrannites.
The inquiry that follows, told across The Forge, Awakening and Kir'Shara, shows that the attack was arranged from within the Vulcan High Command to justify crushing the Syrrannites. Its exposure brings down Administrator V'Las and changes Vulcan's relations with Earth.