In preparation for its next life as new home to the Please Touch Museum, Memorial Hall in Fairmount Park is getting a cleaning, as crews apply acid wash to decades of dirt on the granite facade.

Construction - which includes retrofitting the 1876 interior for exhibition space and the erection of a new glass-pavilion carousel house - is running two weeks ahead of schedule, says museum president Nancy Kolb.

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The museum's current 38,000-square-foot home near the Parkway will close in August 2008 to begin the move. After a series of "soft" openings, the 152,000-square-foot building will open with a gala in October.

About $54 million has been raised for the $88 million project, says Kolb. As part of the financing, the museum has taken on $60 million in bond debt.

The glass pavilion's resident will be a 1924 carousel built by the Dentzel Carousel Co. of Philadelphia. Once in operation at Woodside Park, the carousel is being restored.