|  | 
| High Line | 
|  | 
| Amtrak West Side | 
|  | 
| Amtrak West Side | 
|  | 
| Metro North Park Avenue | 
|  | 
| Metro North Park Avenue | 
|  | 
| Amtrak Inwood Hill | 
|  | 
| Newtown Creek | 
|  | 
| Newtown Creek | 
1. A walk to every block on the island of Manhattan (October 2011 - May 2012) 2. Walks following the routes of all the water tunnels in New York City. (June 2012 - ) 3. Other explorations of water and cities (November 2014 - ) 4. Scientific devices