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| WHERE | WHEN | SIZE (MILES) | EARTH (INCHES) | MATERIAL | COST * (K DOLLARS) | COMMENTS |
|---|---|---|---|---|---|---|
| Swiss Alps | 1989 | 3.7 | 5 NTS | Aluminum | 100 | Sun near FXB Observatory |
| Peoria | 1992 | 45 | 4 | Plexiglass | 25 | Planets on billboards |
| Boston | 1994 | 9.3 | 2 | Steel, Bronze | TBD | Walk at light-speed |
| Ithaca | 1997 | 0.7 | 0.1 | Concrete, Granite, Porcelain | 100 | Sagan Planet Walk |
| Sweden | In Process | 186 | 2.5 | TBD | 750 | World's largest |
| Washington, D.C. | Planned | 0.37 | 0.05 | TBD | TBD | TBD |
* Excludes significant volunteer efforts.
NTS = Not To Scale
TBD = To Be Determined
| | WHAT | WHY | OTHERS | DEV | TPS | TEAM | ENDRSMT | DESIGN | SUN | INFO | PLANET | | LOCATION | VIEW | MAP | QUESTNS | FUNDS | SPONSR | APPRVL | SUMMARY | |