Tallest obelisk
- Who
- Washington Monument
- Where
- United States (Washington,)
- When
- 1884
The world's tallest obelisk is the Washington Monument in Washington DC, USA. It stands 169 m (555 ft) tall and was completed in 1884 to honour George Washington, the first president of the United States. An obelisk is a tapered four-sided column, usually with a pointed top.