This Russian bar-restaurant lies within a three-story underground bathhouse.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Have a steam and some blini at this cafe in a century-old bathhouse.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

A very classy 1920s-era bar right in Grand Central Station.

Nikola Tesla's former home contains an homage hidden from plain sight.

Come for the waffles, stay for more waffles.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The "Seinfeld" diner.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

These Benedictine nuns have been making artisanal cheeses since before it was cool.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

The world's largest public collection of PEZ memorabilia.

This last stalwart of the now-forgotten feminist restaurant movement has been serving food in an activist atmosphere since 1977.

A nearly 100-year-old dining car in upstate New York embodies the golden age of roadside dining.

All that remains of the once-booming chain is a single orange-roofed restaurant.

Try a classic Necco candy bar being resurrected in a small suburban shop.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Maine's oldest diner also happens to win acclaim for its elevated comfort food.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

Home of the first female Hungarian poet, where her secret writing lay hidden for over a century.