Tomorrow is the day of the 45th Annual South End House Tour, hosted by The South End Historical Society.  The tour will take place from 10 – 5, rain or shine. Day of tour tickets may be purchased for $30 in the theater lobby of the Boston Center for the Arts, 539 Tremont Street, and at Roundeau-Tierney Real Estate, 69 Appleton Street.  For complete information visit www.southendhistoricalsociety.org, or call 617-536-4445.  All House Tour attendees gain free admission to the Ellis Boston Antiques Show.