A historic red-brick mansion in Philadelphia’s Rittenhouse Square neighborhood is back on the market asking $8.4 million.

A vibrant red library with an elegant marble fireplace and built-in bookcases doubles as a media room. Nils Timm Sequestered behind high hedges amid a gated parcel of land spanning almost a third ...

When you walk into the main room at the Winthrop library, unless you are focused on the stacks or intent on finding a ...