| Category | Title | Info Number | Website | Background Info | Comment |
| Aircraft | Air and Space Museum-Dulles | 202-633-2563 | www.nasm.si.edu/museum/udvarhazy/ | Guided Tours Also Available | |
| Aircraft | BWI Observation Area | N/A | N/A | Takeoffs & Landings | MD 197 Between MD 295 & MD 97 |
| Aircraft | BWI Tours | (410) 859-7132 | www.bwiairport.com/about_bwi/tour_program/ | ||
| Astronomy | Westminister Astronomy Socie | E-mail Only | www.westminsterastro.org/ | Public Star Parties | Check Calendar on Web Site |
| Black History | Cooling Springs Farm | (301) 874-0235 | www.coolingsprings.org/#History | Tours by Appointment | Safe House on Underground RR |
| Black History | Boyds Negro School House | 301-972-0578 | www.museumsusa.org/museums/info/1167212 | Tours by Appointment | 19510 White Ground Rd, Boyds, Md |
| Black History | Maryland National Registry | N/A | www.marylandhistoricaltrust.net/nr/NRTourIntro3.asp | Various Historic Structures | |
| Gen. Cultural | Weinberg Center | 301-228-2828 | www.weinbergcenter.org/ | Historical, Science | Check Website for Events |
| Gen. Cultural | Chesapeake Arts Center | 410-636-6597 | www.chesapeakearts.org/ | Historical, Science | Check Website for Events |
| Gen. Cultural | Frederick Tourism Site | 301 228-2888 | www.fredericktourism.org/Index.aspx | Historical, Science | Link to Events or Attractions then Monuments |
| Historical Site | Antietem National Battlefield | (301) 432-5124 | www.nps.gov/anti/ | Sharpsburg, Md | Deadliest 1 Day Battle in US History |
| Historical Site | Monocacy National Battlefield | (301) 662-3515 | www.nps.gov/mono/ | Hwy 355 Frederick, Md | Washington Saved by Union Defeat |
| Railroads | Brunswick Railroad Museum | (301) 834-7100 | www.brrm.net/ | Children can operate train set | |
| Railroads | B & O Railroad Museum-Balt. | (410) 752-2490 | www.borail.org/ | 1st Commercial Long Distance RR in | |
| Railroads | Walkersville Southern Railroad | (301) 898-0899 | www.wsrr.org/ | Train Rides | Check Web Site for Schedules |
| Wild Life | Catoctin Wildlife Preserve | (301) 271-3180 | www.cwpzoo.com | Zoo, Animal Shows, Photo Ops | |
| History | C & O Canal Barge Ride | (202) 653-5190 | www.nps.gov/applications/parks/choh/ppdocuments/2006_S | ||
| History | 1st Washington Monument | (301)791-4767 | www.dnr.state.md.us/publiclands/western/washington.html | Constructed by Residents of Boonsbor | |
| Science | Crystal Grottoes | (301) 432-6336. | www.mgs.md.gov/esic/features/cave/crystal.html | Marylands Only Open Show Cave |