THE GUIDE

General Grant National Memorial

The mausoleum dedicated to Ulysses S. Grant, 18th President of the United States of America and hero of the civil war, is located in Riverside Park in the Morningside Heights, a cliff overlooking the Hudson River and was designed by architect John Hemenway Duncan inspired by the Mausoleum of Halicarnassus.
Often called Grant's Tomb, it is a combination of different classic styles built in grey granite and 45 meters high. Its lower rectangular section supports a rotunda surrounded by Ionic columns and surmounted by a conical dome. The massive bronze doors lead to the interior decorated with white Carrara marble, at the center of which there is a crypt with the tombs of the general and his wife, Julia Dent Grant.
It was dedicated on 27 April 1897, the 75th anniversary of his birth, a national memorial in 1959 and made thanks to a public collection organized in 1885 shortly after his death, during which $ 600,000 were raised from 90,000 donors.

References

Kenneth T. Jackson, Lisa Keller, Nancy Flood. The Encyclopedia of New York City: Second Edition. Yale University Press, 2010. p. 546
History & Culture (National Park Service)
General Grant National Memorial (Wikipedia)
General Grant National Memorial (Encyclopædia Britannica)