One of the first terrorist attacks to take place in America took place on September 16, 1920 at 23 Wall Street. From the Wikipedia article on the subject:

“At noon, a horse-drawn wagon passed by lunchtime crowds on Wall Street, in New York City. The wagon then stopped across the street from the headquarters of the J.P. Morgan Inc. bank at 23 Wall Street, on the Financial District’s busiest corner. Inside, 100 pounds (45 kg) of dynamite with 500 pounds (230 kg) of heavy cast-iron slugs exploded in a timer-set detonation, sending the slugs tearing through the air. The horse and wagon were vaporized. Scores of bodies littered the street, and the bomb caused over $2 million dollars in property damage, wrecking most of the interior spaces of the Morgan building. An automobile was hurled into the air, and glass was shattered for blocks (the damage can still be seen on the buildings today [1]). Word soon spread that another bomb would go off, creating further panic.

Shortly before the bomb went off, a warning note had been placed in a mailbox at the corner of Cedar Street and Broadway. The warning read:

Remember we will not tolerate any longer. Free the political prisoners or it will be sure death for all of you. American Anarchist Fighters.

However, far from killing high government officials, the bomb claimed mostly ordinary office clerks, runners, and stenographers as its victims, a fact that must have been evident to the plotters, who had timed the bomb to explode at the start of the lunch hour.”

If you’re visiting the Federal Hall National Memorial (and why wouldn’t you? it’s free!), walk across the street to 23 Wall Street and you’ll see the reminents of one of the first terrorist attacks on U.S. soil.

Getting there: Getting there: Subway 2, 3 to Wall Street or the J, M, Z to Broad Street. Google map.

Admission: Free!