Calvert County Fair

Charles and St. Mary's counties had their fun; now it's Calvert's turn to put on a county fair. Midway games, rides and livestock competitions will be featured as the county celebrates its rural heritage. And there will be pageants aplenty: the crowning of a Miss Tranquility and Lord Calvert, along with Little Miss, Little Prince and baby contests. The fair, which opened yesterday, runs from 9 a.m. to 9 p.m. today, 9 a.m. to 10 p.m. tomorrow and Saturday, and 10 a.m. to 6 p.m. Sunday. 12 and older, $5; younger than 12, free. Calvert County Fairgrounds, 140 Calvert Fair Dr., Barstow. 410-535-0026 or www.calvertcountyfair.com.

Blessing of the Fleet

Oyster season will begin this weekend with the Blessing of the Fleet Festival. The event, in its 38th year, commemorates the first Mass celebrated by sailors and colonists on the Ark and Dove upon reaching St. Clement's Island in 1734. The blessing will be performed by the Rev. Edwin F. O'Brien, archbishop for the U.S. military, and the Rev. Kathleen Vermillion Price, rector of All Saints Episcopal Church in Avenue. There will be a performance by Six Gun South and other live entertainment, a fireworks show, boat rides and crafters. A parade at noon Sunday will feature Miss Maryland, Rachel Ellsworth. Gates open at 10 a.m. Saturday and Sunday. St. Clement's Island-Potomac River Museum, 38370 Point Breeze Rd., Coltons Point. Adults, $5; children younger than 16, free. 301-769-3167, 301-769-2222 or www.blessingofthefleet.net.

Hispanic Celebration

Festival de las Americas will mark Hispanic Heritage Month by celebrating the traditional cultures of Latin America and the Caribbean. Music performances, a folklore dance company and free dance workshops will be featured. Noon-5 p.m. Saturday, Westlake High School, 3300 Middletown Rd., Waldorf. Free. 301-392-1775.

The Calvert County Fair will feature animal competitions, games and other attractions through Sunday.