Category
page 1Time guns
Peter and Paul Fortress
original citadel of St. Petersburg, Russia

Janiculum
thumb|The Janiculum Hill seen from NE. At lower left, the church of San Pietro in Montorio. At lower center, the Academia de España in Rome. At middle right, the Acqua Paola. At top center, the roof of the American Academy in Rome.
The Janiculum ( ; ), occasionally known as the Janiculan Hill, is a hill in western Rome, Italy. Although it is the second-tallest hill (the tallest being Monte Mario) in the contemporary city of Rome, the Janiculum does not figure among the proverbial Seven Hills of Rome, being west of the Tiber and outside the boundaries of the ancient city.
Sydney Observatory
astronomical observatory in Sydney, New South Wales, Australia
sundial cannon
sundial equipped with a cannon which fires at noon
Castle Cornet
island castle in Guernsey
Noonday Gun
Time signal gun in Hong Kong
Fort Denison
heritage-listed former penal site and defensive facility in Sydney Harbour, Australia
Citadel Hill
fort and military museum in Halifax, Canada
Grič cannon
Croatian cannon
Noon Gun
historic time signal in Cape Town, South Africa since 1806