Two adjoining, interconnected 19th-century townhouse buildings are going to market via CBRE’s Dan Kaplan. Sources said they could fetch more than $30 million.

The buildings at 11-13 E. 12th St. have six market-rate rental apartments. More interesting to history buffs, 13 E. 12th St. was once owned by Chester A. Arthur, the 21st president of the US.

It later was home for 75 years — 1924 to 1999 — to the Italian eatery Asti, where waiters sang operatic arias for diners — as featured in the 1988 Tom Hanks movie “Big.” The site is today home to popular restaurant Strip House.