# Prague Astronomical Clock

The world's oldest working astronomical clock, first installed in 1410. Every hour, it performs a mechanical dance where the Twelve Apostles appear in the windows while figures of Death and Greed move below. It tracks solar time, sidereal time, and moon phases.

## Key Facts
- **Type**: sight
- **Address**: Staroměstské nám. 1, 110 00 Staré Město, Czechia
- **Website**: https://www.prague.eu/en/object/places/31/astronomical-clock-prazsky-orloj
- **Hours**: Hourly show 9:00 AM - 11:00 PM
- **Entry**: Free to watch; fees apply for tower climb.
- **Price tier**: free

## Family Amenities
- Animated Apostle Show
- Old Town Square Access
- Wheelchair-Accessible Tower

## Insider Tips
The crowd in Old Town Square gets huge—arrive 15 minutes before the hour. For a better view and a mechanical lesson, climb the tower to see the movement from behind. It's the ultimate 'medieval computer.'


## Sources
- [Prague.eu - Astronomical Clock](https://www.prague.eu/en/object/places/31/astronomical-clock-prazsky-orloj)

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Source: Outline Travel. Last verified: 2026-04-07.
Permanent URL: https://outline.travel/destinations/global-gems/prague-astronomical-clock/