Heading south into Metro-North's Park Avenue railroad tunnel is what I believe is a ballast tamper (I'm pretty sure that blue blur on the side reads "Tamper"), followed by some tools and supplies being pushed by a clown car.

a.k.a. The end of race / Libertad y Xul antes del desayunó

Here's the second part of it. Each of the component pieces of this memorial is identical or at least very similar to something we've seen before, but I think the combination of them all warrants inclusion in the official list as a unique memorial.

Viajero

I believe this was once an ad for Dr. Tutt's Liver Pills. Why Dr. Tutt's? Because "constipation is a crime against nature . . . Dr. Tutt's Liver Pills is the remedy . . . Get a box and see how it feels to have your liver and bowels resume their health-giving natural functions."

Formerly the Italian Savings Bank

Painted by — no surprise — the Royal Kingbee, whose relationship with the drug store chain now clearly transcends the bounds of the Bronx.

This is the home of Homebase, an organization that works to "[prevent] homelessness throughout Manhattan by helping clients resolve any immediate housing crises that placed them at risk of becoming homeless."

This circa-1864 structure, "one of a few surviving frame houses in Harlem which date from the period in the city's history when Harlem was still a rural village", is said to feature one of New York's earliest mansard roofs, predating by a few years "the mansard mania of 1868 to 1873 [which] swept over New York with a peculiar incandescence, but then went out like a guttering candle." (The roof is referred to as a mansard by many architectural sources more knowledgeable than me, but I don't think that is an accurate description, as the roof does not appear to be hipped.) You can see a couple of old photos of this building, as well as one interior shot, here.

Here's a closer look at the whole thing, and here's what's inside one of the compartments.

I had to make a midday trip over to the TSA lost-and-found office near JFK Airport and found this in the waiting area. The plaque reads:

NEW YORK CITY WORLD TRADE CENTER ARTIFACT
The Transportation Security Administration was created in the wake of the terrorist attacks of
September 11, 2001. We are a team of security specialists who work to strengthen and protect
America's transportation systems. This piece of steel is a reminder of why we are here and...
WE WILL NEVER FORGET!

Architecturally reminiscent of the nearby First Presbyterian Church of Springfield Gardens. Here's what this church looked like in 1916.