# R1 | google/gemini-3.6-flash | run 2

## Prompt

In what year was the Eiffel Tower completed, and how tall is it including antennas? Cite your sources.

## Response

The Eiffel Tower was completed in March 1889 to serve as the grand entrance arch for the 1889 Exposition Universelle (World's Fair) in Paris [Eiffel Tower Details](https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQHTNUG-9I4eaEc2CpfKwpn1Wg9BJq5gnpiAI7GVHDiirLeKsjlnD2BIxfTdON_efAxE9t8X2o13Lr3yucj-LBf_URG3OyON0GRiYLUQzCuxsKh5rXljUSoebsHqMK0Sr6cRnFz6rTOPwb1Z76DOVE97VoUVONEP5uukiuRkyOrgLeA=). Including its broadcast antenna, the landmark stands at a total height of 330 meters (1,083 feet) [Antenna Height Upgrade](https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQHugIEUyYnkDGJcggWgd-WQzpGPlZffx-xa1H2zK1N-pTr72OvtuRdQBgouKzuElcvHJ9eJnVSpQSEBNC_dH3pCyYSbx9xZ2Kzl20VChiw0XbmjPCwGe6L_jPcm2gpbts73RNagUSU79QOZuk4rPo4bDE5Fyn21oOvMrmlgLuNkl25tyJNQWxyrUoHqn2a4sNX5AI4=).

## Completion and History
Construction began in January 1887 under the guidance of engineer Gustave Eiffel and was officially finished in late March 1889 [Eiffel Tower Details](https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQHTNUG-9I4eaEc2CpfKwpn1Wg9BJq5gnpiAI7GVHDiirLeKsjlnD2BIxfTdON_efAxE9t8X2o13Lr3yucj-LBf_URG3OyON0GRiYLUQzCuxsKh5rXljUSoebsHqMK0Sr6cRnFz6rTOPwb1Z76DOVE97VoUVONEP5uukiuRkyOrgLeA=). The structure was inaugurated on March 31, 1889, celebrating the centennial of the French Revolution [Inauguration Date](https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQE4y80vYlBR8QzOqVXwxFqkRWF8uOoEjjTjP969Np2SEJnEmaN2FB9sFHIvKYHCITCqvtlFCZBHRzgX3nr6dflRXlYIsjeAhZpkXYC9i-kT7Nes047ErMrNzGe718m6F8SmmLcfhMuG). At the time of its completion, it surpassed the Washington Monument to become the tallest artificial structure in the world [Eiffel Tower Details](https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQHTNUG-9I4eaEc2CpfKwpn1Wg9BJq5gnpiAI7GVHDiirLeKsjlnD2BIxfTdON_efAxE9t8X2o13Lr3yucj-LBf_URG3OyON0GRiYLUQzCuxsKh5rXljUSoebsHqMK0Sr6cRnFz6rTOPwb1Z76DOVE97VoUVONEP5uukiuRkyOrgLeA=).

## Height Specifications
The tower's height has changed several times throughout its history as new broadcasting equipment and antennas were installed.

| Milestone / Component | Height (Meters) | Height (Feet) |
| :--- | :--- | :--- |
| **Original Wrought-Iron Tip** | 300 m | 984 ft |
| **Inaugural Flagpole (1889)** | 312 m | 1,024 ft |
| **Height Prior to March 2022** | 324 m | 1,063 ft |
| **Current Total Height (with Antenna)** | 330 m | 1,083 ft |

On March 15, 2022, a helicopter mounted a six-meter digital audio radio (DAB+) antenna to the top, bringing the tower to its current official height of 330 meters [Antenna Height Upgrade](https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQHugIEUyYnkDGJcggWgd-WQzpGPlZffx-xa1H2zK1N-pTr72OvtuRdQBgouKzuElcvHJ9eJnVSpQSEBNC_dH3pCyYSbx9xZ2Kzl20VChiw0XbmjPCwGe6L_jPcm2gpbts73RNagUSU79QOZuk4rPo4bDE5Fyn21oOvMrmlgLuNkl25tyJNQWxyrUoHqn2a4sNX5AI4=).

Would you like to learn more about the architectural engineering behind the Eiffel Tower's construction?
