Mexico: Holy Week celebrations, April 9-15, in Pátzcuaro and San Miguel de Allende.

Regensburg, Germany: Bach Week, April 10-14.

Melbourne, Australia: The Melbourne Comedy Festival, April 12-May 7, more than 1,000 acts in one of the world's largest such events.

Luang Prabang, Laos: Pii Mai, the Laotian New Year, April 13-15, celebrated in this UNESCO World Heritage Site.

Thailand (various): Songkran, the Thai New Year, April 13-15, marked with colorful parades and much water-throwing.

Canberra, Australia: National Folk Festival, April 13-17.

Rome: On Good Friday, April 14, the pope leads a torchlight procession up Palatine Hill from the Colosseum, reenacting the Stations of the Cross.

Wanaka, New Zealand: Warbirds Over Wanaka, April 14-16, a major air show of vintage and modern warplanes.

Whistler, Canada: TELUS World Ski & Snowboard Festival, April 14-23 Music, arts and sports.

Florence, Italy: Scoppio del Carro, or Explosion of the Cart, April 16, an annual Easter celebration in which a rocket is fired out of the city's cathedral to ignite a large wooden cart in the square outside.

Gaucín, Spain: The Andalusian town's Easterrunning of the bulls, April 16.

Boston: The Boston Marathon, April 17.

Washington, D.C.: Filmfest DC, April 19-30.

Iceland (various locations): The First Day of Summer, April 20, a public holiday marked by nationwide celebrations.

Taiwan (various locations): Mazu (Goddess of the Sea) parades, April 20, with celebrations at 400 temples accompanied by drums and firecrackers.

Hilo, Hawaii: The Merrie Monarch Fest, April 20-22, Hawaii's leading hula competition.

Chau Doc, Vietnam: Ba Chua Xu, April 20-25, the country's largest folk festival.

St. Johns, Antigua: Antigua Classic Yacht Regatta, April 20-25, an exposition of wooden sailing ships.

Nashville: Nashville Film Festival, April 20-26.

Rome: April 21, to mark the founding of the city in 753 BC, the Aventine Hill is covered with candles.