Alexandroupoli Lighthouse, Lighthouse in Alexandroupoli, Greece.

Alexandroupoli Lighthouse is a round white brick tower 18 meters tall, standing on a cylindrical base in the west side of the port. Its green-domed lantern sits above 98 interior steps and six landings with windows; the upper section is metal with ten rows of glass panes.

The need for a lighthouse was demonstrated in the 1850s, and after a contract with the Ottoman authorities the French Lighthouse and Cresset Company built the tower on the west side of the port. It was inaugurated and entered service on 1 June 1880. It was electrified in 1974, with acetylene kept as a backup, and underwent works in 1946, 1955 and 2002.

The lighthouse has been in uninterrupted service since its inauguration on 1 June 1880 and is the emblem of Alexandroupoli. Its beam shows three white flashes every 15 seconds, a rhythm that has become familiar to local sailors entering the port. The keepers once turned the hollow mirror by hand using counterweights and pulleys.

The light emits three white flashes every 15 seconds and can guide ships from a distance of about 24 nautical miles in the Aegean Sea. Visitors get the best views of the tower from the harbor area or nearby waterfront paths.

The light shows three white flashes every 15 seconds, timed 0.38 + 2.12 + 0.38 + 2.12 + 0.38 + 9.62 seconds, and is visible up to 24 nautical miles (about 44 km) from shore. Inside, 98 steps climb past six landings and six windows that light the stairwell, up to a lantern topped by ten rows of glass panes.