Yellowstone National Park

Yellowstone National Park
Yellowstone National Park overlies the huge Yellowstone Caldera.  The Park’s diversity and natural wealth include hydrothermal features such as colorful hot springs, mudpots, and geysers.  There is abundant wildlife, vegetation, lakes, and the Yellowstone River with its canyon and falls.  “In Yellowstone, the interplay between volcanic, hydrothermal, and glacial processes, and the distribution of flora and fauna are intricate.”
The park is in both Wyoming and Montana, so I am posting in both states.

Here is the Park website.     Phone  307-344-7381  Accessibility Guide
The Accessibility Guide is very thorough so I am posting just a bit about some of the accessible places in Yellowstone.
“Manual wheelchairs can be rented at medical clinics for $10 per day with a credit card (or $300 cash) deposit.  Wheelchairs are available for loan at each lodging facility, except Roosevelt Lodge, and the Old Faithful, Canyon, and Albright (Mammoth) visitors centers while in those areas.”
The use of Segways is somewhat limited.  Check ahead.

Anenome Geyser, Old Faithful Geyser and Old Faithful Inn, seen from wheelchair accessible boardwalk, Yellowstone National Park, WY
Anenome Geyser, Old Faithful Geyser and Old Faithful Inn, in background. Yellowstone National Park
Visitors, including wheelchair user, on wheelchair accessible boardwalk Yellowstone National Park
Visitors near Old Faithful, Yellowstone National Park

Wheelchair Accessible Mammoth Hot Springs.   There are accessible boardwalk from which you can view the Mammoth Hot Springs Terraces.
Wheelchair AccessibleNorris Geyser Basin and Area.  There are boardwalks here, but you may need assistance.  The lower section of the Artists Paintpots is wheelchair accessible.
Wheelchair AccessibleOld Faithful.  There are accessible paved trails and boardwalks going to Old Faithful Geyser, Geyser Hill, and Castle Geyser

Old Faithful Geyser & Old Faithful Inn from accessible boardwalk, Yellowstone National Park WY
Old Faithful Geyser & Old Faithful Inn from accessible boardwalk, Yellowstone National Park WY
Plume Geyser from wheelchair accessible boardwalk, Yellowstone National Park, WY
Plume Geyser from wheelchair accessible boardwalk, Yellowstone National Park, WY

Wheelchair AccessibleWest Thumb Geyser Area.  You may require some assistance on these boardwalks, which are by Yellowstone Lake.

Accessible Boardwalk at West Thumb Geyser Basin, Yellowstone National Park, WY
Accessible Boardwalk at West Thumb Geyser Basin, Yellowstone National Park, WY
Wheelchair Accessible Boardwalk by Lake Yellowstone, Yellowstone National Park WY
Wheelchair Accessible Boardwalk by Lake Yellowstone, Yellowstone National Park WY

Wheelchair AccessibleFishing Bridge Area.  There is an accessible trail to the Mud Volcano, 6 miles north of Fishing Bridge.

Wheelchair AccessibleGrand Canyon of the Yellowstone River.  There are a number of accessible trails to overlooks.  See the map in the Accessibility Guide.