The Twins lost their season opener last night, but during the next few months things may look up for them. One thing will certainly be on the rise: temperatures at ballparks and the number of fans at them. When summer gets into full swing, so do baseball ballpark tours.

Bob's Baseball Tours, based in Redwood Falls, Minn., offers two tours. One begins in Phoenix. The second begins in Redwood Falls with a pickup in Bloomington, Minn. It heads west to games in Cleveland (with the Twins), Boston, New York and other Major League parks as well as a stop at the Baseball Hall of Fame. (Sorry, folks, but this one is full, though you can get on the waiting list).

Jack Buckley Baseball Tours, out of LaCrosse, Wis., offers a huge variety of trips, including one that heads west from Phoenix, travels to 7 ballparks and takes in 9 games, including the Twins vs. the Los Angeles Angels at L.A.'s Angels Stadium game on July 23.

Sports Travel and Tours, a New England-based sports tours operator, has announced their trips for the summer, and they cover most of the major league parks and several minor league parks in all parts of the country. “The Wheelhouse” six-day tour includes ball games in Philadelphia, Washington, DC, Baltimore, Pittsburgh, Cleveland, and Detroit, with stadium tours, museum visits, and the Rock ‘n Roll Hall of Fame. Just have a weekend? The “Beantown Blast” includes three games—all in Boston—coupled with tours of both the city and of Fenway Park.