It only took 3 days for a 13th floor condo unit with 2 slate terraces in Inwood Manor to go under contract — after being listed last week with a $995,000 asking price. Those who missed out have a few smaller options to consider elsewhere in the 16-floor beehive building of 110 units (top). A cast concrete tower designed by architect Harwood Taylor, the property has loomed over River Oaks and its hinterlands since 1962. A neighboring 13th floor 1-bedroom unit, furnished, is up for grabs as a lease starting April 1. And a couple smaller units on lower floors are still lingering, including one fitted as an office (above) by Houston interior design legend Herbert Wells, who died in 2010.