Portugal, Lisbon, Belem Tower, 16th-century fortification that served as a point of embarkation and disembarkation for Portuguese explorers and as a ceremonial gateway to Lisbon, the tower symbolizes...

Germany, Hesse, Frankfurt, view of the Main river and the tower of the Kaiserdom Saint Bartholomaus or Frankfurt Cathedral with the Eiserner Steg pedestrian bridge.

Germany, Hesse, Frankfurt, view of the Main river and the tower of the Kaiserdom Saint Bartholomaus or Frankfurt Cathedral with tourist sightseeing boats moored on the waterfront.

Germany, Hesse, Frankfurt, view of the Main river and the pedestrian Eiserner Steg bridge from the tower of the post WW2 restored Frankfurt Cathedral or Frankfurter Dom, the Imperial Cathedral of Sain...

Germany, Hesse, Frankfurt, view of the Main river and the pedestrian Eiserner Steg bridge from the tower of the post WW2 restored Frankfurt Cathedral or Frankfurter Dom, the Imperial Cathedral of Sain...

Malaysia, East Coast, Tioman Island, Sandy beach on W.Coast of island boat.

Singapore, Singapore City, Boat Quay at night with Elgin Bridge Raffles Place skyline behind .

Thailand, Phuket Province; Tourist excursion on Chinese junk with pink sails reflected in deep aquamarine water.

China, Yunnan, Dali, Erhai lake Orange bottomed boats.

Germany, North Rhine-Westphalia, Dusseldorf, View of the waterfront Promenade from the Rheinturm or Rhine Tower which is the city's tallest building.

England, Lancashire, Liverpool, Royal Albert Dock with the Three Graces in the background.

France, Provence-Alpes-Cote d'Azur, Antibes, Juan-les-Pins, Sign for boat tours.