At first the square, the last public space that functioned as the entrance to New York City
A. Roemer and Son at 8 Union Square East & Francis Koehler at 2 Union Square East - Costumers
Lighte and Ernst at 10 Unions Square - Piano Manufacturer
Hotel Hungaria at 4 Union Square East
One of the most popular tables d'hôte was available at the Hotel Hungaria on Union Square, which catered not just to middle class patrons but also to artists and other bohemian New Yorkers.
The Everett House on the corner of 17th Street and Fourth Avenue (built 1848, demolished 1908) was for decades one of the city's most fashionable hotels.
The George Washington Statue installed in the middle of the plaza
Horse carriages running across Union Square East
The proximity with theater, retail, etc coupled with a quickly growing downtown center featuring hotels, shops, and cultural facilities, helped solidify the Square’s status as an en vogue area.
The Mirror, a weekly publication, was founded by George Pope Morris and Samuel Woodworth in August 1823.