Investment firm One William Street Capital Management has expanded to 44,754 square feet at Fisher Brothers' 299 Park Avenue.

When the Harry F. Legg House first came to be shortly before the turn of the 20th century, it was one of many mansions along Park Avenue that housed Minneapolis’ wealthiest residents.

America’s oldest and most venerable office districts are struggling to remain relevant during this period of changing work habits. Then there’s Park Avenue. The stately boulevard created in ...