Barnum was in Europe, he erected, on the present site of the Madison Square Garden, the famous New York Hippodrome. His labors in this connection were so arduous that, when the great enterprise was thoroughly established, he felt obliged to take a long rest. To this end he severed his partnership with Mr. Barnum, and in 1875 took his family to Europe.
Immediately following his return to America, in the spring of 1876, Mr. Coup announced that he had formed a new co-partnership with Mr. Charles Reiche, for the purpose of starting another mammoth enterprise to be known as the New York Aquarium. A large building especially designed for this purpose was erected at the corner of Thirty-fifth Street and Broadway, and was opened October 11, 1876. Into this enterprise Mr. Coup threw the energies and ambitions of a lifetime, and so long as he retained its management the great undertaking was notably successful.
His labors in this connection brought him into relationship with the most celebrated scientists of the world, and many of them became his personal friends. Scribner's Magazine devoted many pages to an article describing the Aquarium, and referred to Mr. Coup as