National Museum of Natural History audio guide,
five stops, free.

Stand beside the platform and look up. The trunk is raised, the ears are spread as wide as they go, and the whole animal seems to be leaning into a stride. That was deliberate. William Brown, the Smithsonian's chief taxidermist in the 1950s, watched how elephants actually move before he built this mount, and he set this one at a fast walk, trunk lifted and ears fanned out. He weighs eleven tons and stands thirteen feet tall, and he has been the first thing visitors see in this Rotunda since 1959.

The elephant was a male African bush elephant. A Hungarian-born engineer and big-game hunter, Josef Fénykövi, tracked him and shot him on the thirteenth of November 1955, in the Cuando River region of southeastern Angola. Fénykövi took the elephant's measurements and drew them up in a sketch, and that sketch, which is still in the Smithsonian's archives, was what the taxidermists worked from.

What actually came to Washington was the hide, all two tons of it. A tanner scraped and soaked it until it was thin and pliable enough to work, and Brown and his colleague Norman Deaton mounted it. On the sixth of March 1959 the finished elephant was unveiled here, in the place of honour at the centre of the Rotunda, and at that moment he was the largest land mammal on display in any museum. He is sometimes called the Fénykövi elephant, after the man who gave the hide, but almost everyone, the museum included, calls him Henry.

Now look at the skin up close. Those deep wrinkles are exactly where dust collects, with more than four million people a year walking past. In 2015 a team cleaned him from end to end and patched every crack with beeswax, coloured by hand to match, and gave him the platform you are standing beside, with an information desk built into its side. In January 2025 the same restorer, the sculptor and taxidermist Paul Rhymer, came back with a small crew for two nights. One group blew the dust off Henry's back from ladders and lifts while the others stood below with vacuum cleaners to catch it, and then they went through every fold with soft brushes.

Before you walk on, go once around the base. There is a miniature diorama of bush elephants drinking at a watering hole, a family tree of elephants and their ancestors, and a case of illegal ivory confiscated by the U.S. Fish and Wildlife Service. The museum's own writers call Henry the largest elephant mount in the world, and after the last cleaning Rhymer's verdict on a hide nearly seventy years on display was two words: excellent condition.

Look at the balance of it. The body is flat to the ground, the tail held out straight behind as a counterweight, one foot planted on the flank of a Triceratops, and the jaws working the victim's head off its neck. It is about forty feet from snout to tail and fifteen feet high, and it is the centrepiece the whole hall was rebuilt around.

On Labor Day weekend in 1988, a rancher called Kathy Wankel was out bone-hunting with her family near Fort Peck Reservoir in Montana, and she spotted a fossil sticking out of ground that the summer had baked as hard as concrete. She and her husband, Tom, dug out part of a shoulder blade and an arm and took them to the Museum of the Rockies in Bozeman, where the paleontologist Jack Horner told them what they had found: Tyrannosaurus rex. The skeleton turned out to be about eighty-five percent complete, and it held something nobody had ever seen, a complete T. rex forelimb.

Look at those arms now. They are famously short, and this was the first skeleton complete enough to show just how short. But the bones carry big attachment areas for muscle, so they were strong. Growth rings inside the bones, read like the rings of a tree, show this animal was about eighteen when it died.

The land it was found on belongs to the U.S. Army Corps of Engineers, which is why the skeleton is federal property, and in 2013 the Corps lent it to the Smithsonian for fifty years. That autumn's government shutdown held it up in Montana. It finally arrived in April 2014, seven tons of fossils on a two-thousand-mile road trip in the back of a FedEx truck. It then went to Research Casting International in Ontario, where each bone was given its own metal cradle that can be unbolted, so scientists can still take a bone down and study it.

The real skull and most of the ribs are too fragile to be put on show, so just over half of what you see is original bone and the rest is careful reconstruction. The Triceratops is a cast as well, a replica of the museum's own Triceratops, nicknamed Hatcher, whose history at the Smithsonian goes back to 1905. The designers gave the copy a broken horn and a couple of fractured ribs, and the museum's curator of dinosaurs, Matthew Carrano, wanted exactly this: a pose nobody had done before, with the two animals directly engaged.

The hall reopened around them on the eighth of June 2019. And this T. rex left one more mark on science: when Mary Schweitzer tested its bones, she found heme, a form of iron from blood, still inside a sixty-six-million-year-old skeleton.

It turns. Stand still for a minute and the pedestal carries the necklace round inside its glass cylinder, three inches of bulletproof glass, so the stone catches the light from one side and then the other. The blue is not the blue of a sapphire. It is a deep, greyish blue, set in a ring of sixteen white diamonds. It weighs 45.52 carats, and it is the largest blue diamond known.

The colour comes from a trace of boron inside the carbon, a few parts per million at most. And there is a property you will never see here: put it under short-wave ultraviolet light and switch the lamp off, and it glows red, like a coal, for some time afterwards. That eerie glow may well have fed the stories that grew up around it.

Its known history starts in India. The stone most likely came from the Kollur mine, in the old kingdom of Golconda, and in the seventeenth century the French gem merchant Jean-Baptiste Tavernier bought it and brought it to Europe. In 1668 he sold it to King Louis the Fourteenth, who had it cut into a gem the French called the Blue Diamond of the Crown, and later writers the French Blue.

Then it vanished. In September 1792, with the king in prison, thieves broke into the royal storehouse in Paris and spent five days looting the jewels of the French crown. The French Blue was never recovered under that name. In 1812 a blue diamond of exactly this size and shape turned up in London, recut, and it later took its name from one owner, the collector Henry Philip Hope. In 2005 the Smithsonian published computer-aided research showing that this stone was indeed cut from the stolen French Blue.

And the curse? A newspaper was already telling the tale of a stone torn from the eye of an idol in 1888, and the stories of ruin for everyone who owned it multiplied in the early twentieth century. They were almost certainly invented, and they helped sell newspapers and diamonds. In 1911 the American heiress Evalyn Walsh McLean bought it, and the platinum setting with the sixteen diamonds you are looking at was made for her. After her death the New York jeweller Harry Winston bought her whole collection in 1949.

Winston liked to say that America had no king and queen, but should have a treasure to match. On the tenth of November 1958 it arrived here as his gift, and it came by post: a small box wrapped in brown paper, plastered with stamps and marked fragile, sent from New York by registered mail. The total fee was $145.29, of which $2.44 was postage and the rest was insurance for a million dollars. The wrapper is kept today by the Smithsonian's National Postal Museum.

Since 1997 the diamond has had its own room next to the rest of the national gem collection. In 2025 Winston's son Ronald gave the rare Winston Red and a collection of forty fancy coloured diamonds, and they now sit beside it in the Harry Winston Gallery. The Hope has left Washington only a handful of times, to the Louvre in 1962 and to Johannesburg in 1965 among them. The rest of the time it has been in this building, ever since a postal carrier named James Todd picked up a brown paper parcel at the City Post Office and drove it here.