1. GREENWICH

2. Greenwich london
Greenwich is a borough in London, England, on the Banks of the River Thames. Knowm for its maritime hitory, it’s home to the Cutty Sark, a restored 19th-century ship, the huge National MaritimeMuseum, and the classical buildings of the Old Royal Naval Colllege. The modern 02 arena sits on a península to the north. Overlooking peaceful Greenwich Park, the Royal Observatory is the site of the Greenwich meridian line.

4. The meridian line in Greenwich
Represents the prime meridian of the world, longitude zero (0º 0’ 0”). Every place on the Earth is measured in terms of its angle east or west from this line.