La Chaine and St. Nicholas towers at the entrance to the ancient port of La Rochelle at dusk, Charente-Maritime, France, Europe

Restaurants lining the edge of the marina in the ancient port of La Rochelle, Charente-Maritime, France, Europe

The Phoenician Roman port of Tharros, Sardinia, Italy, Mediterranean, Europe

Blue wooden finish boats and nets, Sqala du Port d'Essaouira, Essaouira, Morocco, North Africa, Africa

Temple dedicated to the god of the water (Portuno) (Temple of Portunus), the ancient port of Rome on the Tiber river, Rome, Lazio, Italy, Europe

Castle Stalker, near Port Appin, Argyll, Highlands, Scotland, United Kingdom, Europe

The Phoenician Roman port of Tharros, Sardinia, Italy, Mediterranean, Europe

Apollonia Cyrenaica, one of the five towns of the Libyan Pentapolis, the port town of Cyrene, Libya, North Africa, Africa

Aerial image of Dover Castle with Dover Harbour beyond, Kent, England, United Kingdom, Europe

Blue boats in fishing port outside fortified town walls on west coast, Essaouira, Morocco, North Africa, Africa

Fortaleza da Ponta da Bandeira, Lagos, Algarve, Portugal

Ancient port, Genova (Genoa), Liguria, Italy, Europe

St. Nicholas and La Chaine towers at the entrance to the ancient port of La Rochelle, Charente-Maritime, France, Europe

The ancient fortified citadel reflected in the blue sea, Calvi, Balagne Region, Corsica, France, Mediterranean, Europe

View of the three Towers at the entrance to Vieux Port, La Rochelle, Charente-Maritime, France, Europe

The biosphere, Ancient port, Genova (Genoa), Liguria, Italy, Europe

Ancient port, Genova (Genoa), Liguria, Italy, Europe

Ancient Ostia, the Roman port, Rome, Lazio, Italy, Europe

The ancient port of Essaouira, Morocco, North Africa, Africa

Byrsa Hill looking down on the ancient port at the port of Carthage, Tunis, Tunisia, North Africa, Africa

Dubrovnik Old Town Port, UNESCO World Heritage Site, from Mount Srd, Dubrovnik, Croatia, Europe

View of Kavala Fortress and boats in the port, Kavala, Dimos Kavalas, Eastern Macedonia and Thrace, Gulf of Thasos, Gulf of Kavala, Greece, Europe

Greek part of the archaeological site of Empuries, Costa Brava, Catalonia, Spain, Europe

View of Kavala Fortress from the port, Kavala, Dimos Kavalas, Eastern Macedonia and Thrace, Gulf of Thasos, Gulf of Kavala, Greece, Europe

View of Kavala Fortress from the port, Kavala, Dimos Kavalas, Eastern Macedonia and Thrace, Gulf of Thasos, Gulf of Kavala, Greece, Europe

View of the New Fortress from Old Port Square, UNESCO World Heritage Site, Corfu, Ionian Sea, Greek Islands, Greece, Europe

View of Kavala Fortress from the port, Kavala, Dimos Kavalas, Eastern Macedonia and Thrace, Gulf of Thasos, Gulf of Kavala, Greece, Europe

Aerial view of the Venetian port of Chania, Fort San Salvador, Crete, Greek Islands, Greece, Europe

Old bombed house in the old port town of Massawa, Eritrea, Africa

Waterfont, Porto Antico (Ancient Port), Genova (Genoa), Liguria, Italy, Europe

Old walls and port, Cuitadella, Menorca, Balearic Islands, Spain, Europe

Waterfont, Porto Antico (Ancient Port), Genova (Genoa), Liguria, Italy, Europe

Waterfont, Porto Antico (Ancient Port), Genova (Genoa), Liguria, Italy, Europe

Waterfront, Porto Antico (Ancient Port), Genova, Liguria, Italy, Europe

Quai Duperre, La Rochelle, Charente-Maritime, France, Europe

Waterfront, Porto Antico (Ancient Port), Genova, Liguria, Italy, Europe

Jaffa Tower, Jaffa, Tel Aviv

Waterfront, Porto Antico (Ancient Port), Genova, Liguria, Italy, Europe

The towers of La Chaine and St. Nicholas at the entrance to the ancient port of La Rochelle, Charente-Maritime, France, Europe

Seaside resort of Castro Urdiales in Northern Spain with the 13th Century Iglesia de Santa Maria

View of the theatre and the island, Delos, Cyclades Islands, Greece

Seaside resort of Castro Urdiales in Northern Spain with the 13th Century Iglesia de Santa Maria

The ancient heritage centre of Porto, UNESCO World Heritage Site, Portugal, Europe

Aerial views of El Castillo and the Ruins of the Mayan temple grounds at Tulum, Quintana Roo, Yucatan, Mexico. Tulum is the site of a pre-Columbian Mayan walled city which served as a major port for Coba, in the Mexican state of Quintana Roo. The ruins are situated on 12 meter 39 ft tall cliffs along the east coast of the Yucatán Peninsula on the Caribbean Sea in the state of Quintana Roo, Mexico. Tulum was one of the last cities built and inhabited by the Maya; it was at its height between the 13th and 15th centuries and managed to survive about 70 years after the Spanish began occupying Mexico. Old World diseases brought by the Spanish settlers appear to have resulted in very high fatalities, disrupting the society, and eventually causing the city to be abandoned.

Aerial views of El Castillo and the Ruins of the Mayan temple grounds at Tulum, Quintana Roo, Yucatan, Mexico. Tulum is the site of a pre-Columbian Mayan walled city which served as a major port for Coba, in the Mexican state of Quintana Roo. The ruins are situated on 12 meter 39 ft tall cliffs along the east coast of the Yucatán Peninsula on the Caribbean Sea in the state of Quintana Roo, Mexico. Tulum was one of the last cities built and inhabited by the Maya; it was at its height between the 13th and 15th centuries and managed to survive about 70 years after the Spanish began occupying Mexico. Old World diseases brought by the Spanish settlers appear to have resulted in very high fatalities, disrupting the society, and eventually causing the city to be abandoned.

Port, harbour, Byblos, Lebanon

Alghero Sardinia Italy

Fishing boats in the marina and the ancient Portuguese Citadel, Essaouira, Morocco

Dubrovnik harbour at twilight, Dominican Monastery, Old City of Dubrovnik, Croatia, Europe

View at Jaffa, ancient arabic sea port, Tel Aviv, Israel, Middle East

Walled Old City of Dubrovnik, Croatia

Walled Old City of Dubrovnik, Croatia

Walled Old City of Dubrovnik, Croatia

Tourist excursion ship entering old port of Dubrovnik harbour, Croatia, Europe

The Speicherstadt, an ancient brick-built warehouse complex, port of Hamburg, Hamburg, Germany

Look of the fortress Spanjola on the harbour of Hvar, Island Hvar, Dalmatia, Croatia

Ancient sailing ship in Hamburg during the 817th anniversary of Hamburg Harbour, Hamburg, Germany

Mosaic floor in front of row of shops in the Piazzale delle Corporazioni, Square of the Guilds or Corporations, Ostia Antica archaeological site, ancient port city of Rome, Lazio, Italy, Europe

Fishing boats in the ancient port of Jbeil, Byblos, Lebanon, Middle East, Orient

Fishing boats in the harbour of Byblos, Unesco World Heritage Site, Jbail, Lebanon, Middle East, West Asia

Remains of Herod's old port, Caesarea, Israel, Middle East, Southwest Asia

Fishing boats in the harbour of Byblos, Unesco World Heritage Site, Jbail, Lebanon, Middle East, West Asia

Fishing boats in the ancient port of Jbeil, Byblos, Lebanon, Middle East, Orient

Sailboats at La Napoule Harbor near a castle, Cotep'Azur, France

Old harbour, La Rochelle, France, Europe

Roman Aqueduct With Arches At Sunset In Caesarea Maritima National Park, Israel

Roman Aqueduct With Arches At Sunset In Caesarea Maritima National Park, Israel

Vis town, Franciscan monastery and harbour, Vis Island, Croatia

Vis town, Franciscan monastery and harbour, Vis Island, Croatia

Vis town, Franciscan monastery and harbour, Vis Island, Croatia