The Grand Union Hotel was located on Broadway in Saratoga Springs, New York. The hotel began as a boarding house, built by Gideon Putnam in 1802, but grew into the world's largest hotel, before it was demolished in 1953.
The initial draw to the area were summer vacationers attracted by the mineral spas. Over time this became a luxury hotel that catered to the wealthy elite. Renovations and expansions saw the hotel grow to serve over 2,000 guests as a destination resort. The Grand Union Hotel Stakes race was run at the Saratoga race track until 1958 and was named after this historic hotel.
The Grand Union Hotel, built by city founder Gideon Putnam, began as Putnam’s Tavern and Boarding House in 1802. The original building would not have been considered a true hotel, because the concept of a modern hotel was invented by American architect Isaiah Rogers decades later in 1823.
Putnam bought a one-acre building site adjacent to Congress Spring from Judge Walton. The boarding house was finished in 1803. The building was a mortise and tenon clapboard structure that was described as two Federal style houses placed end to end. It had 10 windows across the front, whitewashed exterior, and dark shutters. The structure was 70 feet long, three stories high, and had 70 guestrooms. The original structure most likely contained small private guestrooms, the Putnam’s living spaces, and probably a few formal parlors. A large porch was added in 1822, and Gideon’s wife, Doanda Putnam, painted a sign for Putnam’s Tavern depicting Israel Putnam’s famous eradication of the last wolf in Connecticut
During the hotel's early days, it was probably open only during the summer. This was common practice in upstate New York; the similar Sans Souci and Aldridge House hotels in Ballston Spa were also only open in the summertime. The mineral springs, which were purported to have great health effects, were the main attraction for this region and were typically visited only in the summer. Ballston Spa was the original vacation destination, and Putnam hoped to tap into the tourist trade by opening his hotel close to the mineral springs. The first summer that the boarding house was open, it was filled to capacity with 70 guests and was a huge success.