The Cadillac Ranch is a public art installation in Amarillo, Texas: Ten junker Cadillacs are buried nose-first in the ground, at an angle corresponding to that of the Great Pyramid of Giza.

What will future archaeologists make of this?

A note found stuffed in a vase in a Massachusetts thrift store.

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In 2002, charity fundraiser Lloyd Scott ran the London Marathon wearing a 120-pound deep-sea diving suit.

He finished the 26.2-mile course in five days, eight and a half hours — a record high.

The youngest confirmed mother in medical history is Lina Medina of Paurange, Peru, who gave birth to a 5.9-pound boy at age 5. The delivery was done through caesarian section; it’s not known how she conceived the child. Her son, Gerardo, was raised believing that Lina was his sister.

An optical illusion. Move your nose toward the dot in the center.

Freud would have loved San Jose’s “Winchester Mystery House,” a mansion-sized emblem of its owner’s mental illness. Rifle heiress Sarah L. Winchester started construction in 1884, and never stopped. A medium had told her of a family curse, and convinced her that she would die if the construction ever ceased.

So it went on, 24 hours a day, for 38 years. There was no plan; the house was just continuously rebuilt. Worse, Sarah believed that vengeful spirits of gun victims were seeking her, so she slept in a different room each night, and the layout is full of secret passages and stairways and doors that lead nowhere.

The result shows what $5.5 million worth of insanity looks like. Altogether there are 160 rooms, including 40 bedrooms, 47 fireplaces, 1,260 windows, 17 chimneys (with evidence of two others), two ballrooms, two basements and three working elevators.

It takes 20,000 gallons to paint the place, so painting never stops. In that sense, Sarah’s weird wish lives on.

The Society for the Prevention of Calling Sleeping Car Porters “George” was a lighthearted association with a useful, if incidental, cause. Most railway porters were black, and many passengers called them all George, following the racist custom of naming slaves after their masters. (George Pullman ran the company that made the cars, so the porters were regarded as his servants.)

Strangely, the prevention society was founded not by the black porters, but by white railway employees who were actually named George. Apparently they were either annoyed by the tradition or thought that such a society would be a good joke.

People did think it was funny, or at least inoffensive. At its peak, the society had 31,000 members, including King George V of the United Kingdom, Babe Ruth (whose given name was George), and French politician Georges Clemenceau.

Late last year, somewhere in the lonely New Mexico desert, someone began broadcasting a strange shortwave radio signal.

At regular intervals, on several frequencies, Yosemite Sam says, “Varmint, I’m a-gonna blow you to smithereens!”

The FCC thinks the signal is originating in the desert near Albuquerque, but no one knows who’s broadcasting it, or why.