New in bold.
United States:- Acadia, ME (2011, 2017)
- Arches, UT (2020)
- Badlands, SD (2020)
- Black Canyon of the Gunnison, CO (2020)*
- Bryce Canyon, UT (2020)
- Canyonlands, UT (2020)
- Cuyahoga Valley, OH (2014, 2020)
- Death Valley, CA (2020)
- Denali, AK (2020)
- Everglades, FL (2010, 2019)
- Gateway Arch, MO (2019, 2020)
- Grand Teton, WY (2012, 2020x2)
- Great Smoky Mountains, NC/TN (2013, 2020)
- Haleakala, HI (2014)
- Hawaii Volcanoes, HI (2012, 2018)
- Indiana Dunes, IN (2020)
- Katmai, AK (2020)
- Kenai Fjords, AK (2013)
- Lake Clark, AK (2020 x2)
- Mammoth Cave, KY (2020)
- Rocky Mountain, CO (2009)
- Shenandoah, VA (2020)
- Yellowstone, WY/ID/MT (2012, 2020x2)
- Yosemite, CA (2020)
- Zion, UT (2020)
International:- Banff National Park, Canada (2017)
- Jasper National Park, Canada (2017)
- Lovćen National Park, Montenegro (2018)
- Parque Nacional Viñales, Cuba (2015)
- Sassen–Bünsow Land National Park, Svalbard (2016, 2018)
- Skadar Lake National Park, Montenegro (2018)
- Snæfellsjökull National Park, Iceland (2016)
- Tierra del Fuego National Park, Argentina (2018)
- Vatnajökull National Park, Iceland (2015, 2016, 2019x2, 2020)
- Yoho National Park, Canada (2017)
*Made it nearly to the visitor center before turning around due to weather. Didn't see more than a snowy road, so I was
technically there although obviously it doesn't count as a real visit.