Gateway Arch


Basic information
The Gateway Arch is the world's tallest arch as well as the tallest man-made monument in the Western Hemisphere. The arch is in St. Louis, Missouri, US, and is a 192 meter tall (630 foot) weighted catenary arch that is covered in stainless steel. It is accessible to the public and is a popular tourist attraction and symbol of St. Louis. Its officially devoted to "the American people" after it was built as a monument to the westward expansion of the US, the Arch is also referred to as "The Gateway to the West".
Eero Saarinen was the Finnish-American architect who designed the Arch in 1947, however the construction began 16 years later on February 12, 1963 and then was completed on October 28, 1965 two years later. The Arch then opened to the public on June 10, 1967, on the west bank of the Mississipi River in St. Louis. The arch cost $13 million to build (the same as $80.6 million in 2018).

- 57 days from now, July 1, 2025, Gateway Arch celebrate 97th Venus age
- 78 days from now, July 21, 2025, Gateway Arch celebrate 248th Mercury age
- 166 days from now, October 17, 2025, Gateway Arch celebrate 249th Mercury age
- 177 days from now, October 28, 2025, Gateway Arch celebrate 60th birthday
177 days from now, October 28, 2025, Gateway Arch celebrate exactly 720 months - 245 days from now, January 4, 2026, Gateway Arch celebrate 32nd Mars age
- 252 days from now, January 11, 2026, Gateway Arch celebrate exactly 1,900,000,000 seconds
- 254 days from now, January 13, 2026, Gateway Arch celebrate 250th Mercury age
- 262 days from now, January 21, 2026, Gateway Arch celebrate exactly 22,000 days
- 282 days from now, February 10, 2026, Gateway Arch celebrate 98th Venus age
- 342 days from now, April 11, 2026, Gateway Arch celebrate 251st Mercury age