Atlas. Atlas organizes one-day excursions from Dubrovnik to neighboring countries (passports required). In Bosnia-Herzegovina, you can visit the pilgrimage site of Medjugorje, where the Virgin Mary is said to have appeared in 1981, or Mostar with its Turkish-inspired Old Town and reconstructed bridge. Or take a day-trip to Budva and the Bay of Kotor in Montenegro. Tours can be booked directly with Atlas, at the main tourist information center near Pile Gate, or at Travel Corner in Gruž. 012/415–611; www.atlas-croatia.com.