The Rigi (or Mount Rigi; also known as Queen of the Mountains) is a mountain massif of the Alps, located in Central Switzerland. The whole massif is almost entirely surrounded by the water of three different water bodies: Lake Lucerne, Lake Zug and Lake Lauerz. The range is in the Schwyzer Alps, and is split between the cantons of Schwyz and Lucerne, although the main summit, named Rigi Kulm, at 1,798 meters above sea level, lies within the canton of Schwyz.
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In a Aug. 18 letter to her mother, Livy described the excursion:
Thursday about two o’clock we started on our trip to the top of the Rigi, we went for nearly an hour in a boat then took an open car in which we were pushed by a steam engine up the mountain....Mr. Clemens and Mr. Twichell walked up....When we reached the top the rain was pouring and the wind blowing a perfect gale....We went to our rooms took a glass of wine, lay down and I had a nap before the gentlemen came....
After the gentlemen had gotten on dry clothes (Mr. Clemens lay in bed while his pants were dried) we had our supper—The hotel is a beautiful one way up there on the top of the mountains...after supper we tried to get warm at the stove but there were too many people...so after a little while we went to our room. Mr. Clemens got in bed to get warm, we brought all the candles into one room, so that we might have a little cheerful look to things—Mr. Twichell wrote, Mr. Clemens read, Clara sewed. I held a book and pretended to read but most of the time talked to Clara....
The wind blew very very hard all night, about four in the morning the trumpet blew for us all to get up and see the sun rise. Such a spectacle as it is to see the people get up and come out frozen to death to watch for the sun.
(Day By Day)

Bædeker Switzerland (1877) Route 20 page 61