A nearly 100-year-old vacant downtown Miami courthouse where mob boss Al Capone once stood trial will be up for grabs, teeing up a potential high-density redevelopment. The Miami-Dade County Courthouse, listed in the National Register of Historic Places, at 73 West Flagler Street, will be auctioned off Wednesday via GovDeals.com, the South Florida Business Journal reported. Completed in 1928, the 28-story courthouse was once the tallest building in the Sunshine State, spanning 265,000 square feet on a 1.66-acre lot in downtown Miami. The historic property carries a $43 million valuation, records show.  The courthouse sits on civic institution zoning and […] This article originally appeared on The Real Deal. Click here to read the full story.