Sip a cappuccino in the historic cafe that introduced them to the United States.

The site of the deadly Triangle Shirtwaist Factory Fire.

The oldest living tree in Manhattan comes shrouded in sinister legend.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

This haunting monument honors the victims of 9/11.

One of the smallest towns in the United States.

Miraculous tree that seems to sprout out of solid rock.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

A small Wyoming town is home to the state's oldest-operating soda fountain.

The only retired U.S. nuclear missile silo that is open to the public.

These boots are made for selfies.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

A historic ballroom host to famous performers from the big band era to 1980s rock.

This lakefront cottage was crafted in the 1800s and was once a sanitorium.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

Home on the Hillside, and home of the first breakfast cereal.

A diorama of the Civil War, fought by cats.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

This giant, rotating globe was built to celebrate the expansion of a company that makes steam cleaners and pressure washers.