Crystal Cruises said it has expanded the active side of its shore excursion lineup with 16 bicycle tours in European ports of call this summer.

The half-day or full-day tours are offered for May-September voyages aboard Crystal Symphony and Crystal Serenity.

In Malta, a 12.5-mile route travels through countryside only accessible by bicycle and along the western coastline. In Copenhagen, Denmark, guests go on a winding, 5-mile ride through a forest en route to a 500-year-old amusement park.

Other cities with bicycle excursions are Barcelona and Valencia, Spain; Tallinn, Estonia; Bassens/Bordeaux and St. Tropez, France; Guernsey, Channel Islands; Mallorca; Corfu, Greece; Dubrovnik, Croatia; Helsinki, Finland; Holyhead, Wales; Kotor, Montenegro; Skagen, Denmark; and St. Petersburg, Russia.

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