Christmas in Rome and the pope's Christmas Day blessing at St. Peter's Square will highlight three trips that depart from London Dec. 12, 17 and 20. Although the tours are 12-, 16- and 19-day trips, all visit Venice, Florence, Lake Lucerne, the Alps, Austria, Brussels and Paris. Tour members will arrive in Rome on Christmas Eve, take a sightseeing drive and then dine a local restaurant.

On Dec. 25, they will go to St. Peter's Square, have lunch and take a half-day sightseeing tour of Rome. Cost of the three trips ranges from $656 to $1,069, with accommodations, daily continental breakfasts, a Christmas lunch, about half the dinners, motor coach, a tour escort and sightseeing all part of the price. For more information, contact Cosmos Tourama, 150 S. Los Robles Ave., Pasadena 91101, (800) 556-5454.-0

A 10-day trip to Nepal's Himalayas, highlighted by a four-day trek in the Annapurna foothills, has been planned by Journeys. The trekking exploration will visit Buddhist communities, a subtropical forest and local villages surrounded by high mountain peaks.

The trip, which can be taken by as few as two people or in a group, includes four nights in a Katmandu hotel, most meals, guides, trekking fees, land transportation, camping equipment and a Sherpa-style farewell dinner. Cost of the journey, which can be scheduled through June, 1991, is $695, excluding air fare. For more information, contact Journeys, 4011 Jackson Road, Dept. R-7, Ann Arbor, Mich. 48103, (800) 255-8735.


The culture and history of Thailand and Indonesia will be studied through their architecture on a 21-day tour that begins in Bangkok.

Other cities on the trip are Phitsanuloke, Tak, Chiang Mai, Chiang Rai, Korat, Ayutthaya, Jakarta, Jogjakarta, Denpasar and Batubulan. An itinerary includes visits to palaces, museums, temples, an archeological dig, a hill tribe, and an elephant work place.

Cost is $3,860 from Los Angeles, with round-trip air fare, domestic flights in Thailand and Indonesia, accommodations, most meals and sightseeing part of the price. Departure is Feb. 13, 1991, with the return date March 5. For more information, contact Distant Horizons, 679 Tremont St., Boston, Mass. 02118, (800) 333-1240.


"The Treasure of the Caribbean" is the theme of a faculty-escorted tour of the Dominican Republic sponsored by Pasadena City College. Stops will be in Santo Domingo, Barahona, Puerto Plata and Samana, with the University of St. Thomas Aquinas, walking tours, museums, a botanical garden, palaces, sightseeing and Lake Enriquillo National Park on the schedule.

The trip, from Jan. 4-16, 1991, costs $1,895 per person, double occupancy. Round-trip air fare from Newark Airport, accommodations, most meals, a lecture and seminars, air and land transfers and guides are part of the price. For more information, contact Pasadena City College, Community Education Center, Room C117, 1570 E. Colorado Blvd., Pasadena 910006-2003.

-0 A tour to celebrate the birthday of Wolfgang Amadeus Mozart is being offered by Now Voyager Tours for the last week in January. Participants will spend three days in Vienna and four in Salzburg, Austria, where they will attend a concert in the house where Mozart lived, on the composer's birthday, Jan. 27.

An itinerary includes four concerts, all featuring Mozart, in four days in Salzburg, performed by the English Baroque Orchestra, the Camerata Academica Salzburg and the Mozarteum Orchestra. In addition, in Salzburg, the group will attend a dinner in the same 300-year-old restaurant that the Mozart family frequented. In Vienna, the group will attend a performance of Mozart's "Marriage of Figaro" at the Vienna Volksoper, and a concert by the Chamber Orchestra of Europe.

During the trip, the group will visit the house in St. Gilgen where Mozart's mother was born, lunch at an inn where Mozart appeared in public for the first time when he was 6 years old, go to the Melk Monastery to hear an organ performance, and take walking tours of "Mozart's Salzburg" and "Mozart's Vienna."

Cost is $1,359 per person, double occupancy. Round-trip air fare is extra. For more information, contact Now Voyager Tours, Deer Lane, Pawlet, Vt. 05761.


The Caribbean will be the destination of the Royal Viking Star on a round-trip voyage from Fort Lauderdale, Fla., beginning Jan. 6. Cost, depending on cabin, is from $2,200 to $11,925, excluding air fare. For more information, contact Royal Viking Line, 95 Merrick Way, Coral Gables, Fla. 33134, (800) 422-8000.

-0 The Los Angeles Times is not responsible for changes in prices, dates or itineraries. These should be confirmed with airlines, cruise lines, tour operators or travel agents.