At this local mall, visitors are ushered through a 1940s jail exhibit.

This historic graveyard was partially paved over to create a streetcar line.

San Diego's most historic and haunted home.

The old fire tower is one of the last of its kind in the United States.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

This blowhole is supposedly caused by a trapped monster.

The Route 66 institution that inspired Taco Bell also served as an important headquarters for Mexican-American social movements.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

Scattered throughout London are ancient remnants of the city's former bounding wall.

This sidewalk tribute honors Colorado's great culinary creation.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

It is locally loved and ridiculed for literally looking like poop.

The first safe in this California town had to hold all the gold.

This municipal playground was co-created by the father of one of the most playful characters ever.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A bit of retro transportation flair preserved in the world's largest department store.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.