The DARA Tennis Club is being relocated to a rooftop on a parking garage.

 Several properties on the Central Experimental Farm are being impacted to accomodate a medical centre. Maple Drive will be an ambulance route.

The DARA Tennis Club, Maple Drive. This entire location is being sacrificed for a parking lot, see the map posted on the "Reimagine Ottawa" website on October 2, 2021 entitled "Dedicated to automobiles"..

The Observatory House was the official residence of the Dominion Chief Astronomer.

  

The Geophysical Laboratory "is closely associated with the accelerated growth of the area of study dealing with gravity, geomagnetism and solar physics in Canada." (From: historicplaces.ca.)

 The South Azimuth is adjacent to Maple Drive. According to a Royal Astronomical Society of Canada YouTube video "We are now in a phase where there is going to be a road and traffic widening study being conducted. Already the South Azimuth is getting in the way of the road widening plan." (From: Point 27:06 out of 32 minutes and 38 seconds on the RASC video.)

The South Azimuth. Photo is from Flickr.

The Royal Astronomical Society of Canada YouTube video.