Franklin Institute

Listen for a moment. Underneath the voices of children and the shuffle of feet, there is a low, steady hum. It is the sound of a building full of working machines. Before you reach the exhibits, walk into the round marble hall at the heart of this place. Here the noise softens. The air feels cooler. And a man made of white stone looks down at you, calm and patient, as if he has been waiting for you to arrive.

That man is Benjamin Franklin. He was a printer, a writer, a diplomat, and an inventor. This is the Franklin Institute, one of the oldest centres of science education in the United States. The seated statue in front of you is the Benjamin Franklin National Memorial. It was carved by the American sculptor James Earle Fraser. He made Franklin far larger than life, so visitors have to tilt their heads back to meet his gaze. Stand at the edge of the rotunda and notice how the dome above carries your voice upward.

The institute itself is older than this building. Here is the first surprise. It was founded in 1824, more than three decades after Franklin died. A group of Philadelphians wanted to honour him by teaching the mechanic arts, the practical skills of engineers and craftsmen. At that time the city was filling with workshops, foundries, and shipyards. Working people needed lectures, libraries, and a place to test new ideas. The institute gave them all three.

The early institute did not sit here on the Benjamin Franklin Parkway. Its first home was a Greek Revival building in the older part of the city, near Independence Hall. That building still stands today. In the 1930s the institute moved to this grand site at Logan Square. Look at the outside as you leave later. The heavy columns and pale stone match the civic style of the Parkway, a long avenue built to give Philadelphia a boulevard in the European manner.

Now follow the hum back into the galleries. The Franklin Institute was one of the first museums in America to encourage visitors to touch things. Here, you are meant to push the buttons, turn the cranks, and climb inside the exhibits. Parents often notice that the children run ahead. Then, a few minutes later, the adults are the ones who cannot leave a display alone. This is not a quiet museum, and it was never meant to be.

Many visitors head straight for the Giant Heart. It is a model of a human heart, so large that you can walk through its chambers. Families have been doing this for generations, since the 1950s. Many Philadelphians remember their own first walk through it as children. Inside, you hear a heartbeat around you, and you follow the path that blood takes through the body. The exhibit has been updated over the years, but the basic idea has stayed the same. You learn the heart by walking through it.

From the heart, find your way to the trains. In a large hall stands a real steam locomotive built by the Baldwin Locomotive Works. That company was once one of the largest locomotive builders in the world, and its factories stood in Philadelphia. This engine is the Baldwin 60000, an experimental locomotive from the 1920s. Walk around it slowly. The wheels are taller than most children. The black iron body has rivets you can count. It is one of the clearest reminders that this city once built the machines that moved a country.

Flight has a place here too. The institute holds an early aircraft built by the Wright brothers, the American pair who made the first powered aeroplane flights. Look at how fragile it seems. The frame is wood, the wings are fabric, and the wires look as thin as string. It is hard to believe that people sat on machines like this and trusted them to leave the ground. Next to the jet engines and space displays elsewhere in the building, it shows how fast flight changed in a single lifetime.

Now for a second surprise, and it is easy to miss. Somewhere in the collection sits a small mechanical figure called Maillardet's Automaton. It was built around the turn of the nineteenth century by a Swiss clockmaker. When the automaton was wound up, it could draw detailed pictures and write short poems with a pen. When it came to the institute, no one knew who had made it. Then the machine was repaired and set running. It wrote its own answer, a line in French that named its maker, Maillardet. The machine had kept its secret for more than a century, and then it gave its own maker's name.

Look up as you walk through the main atrium. You may see someone pedalling a bicycle along a thin cable high above the floor. This is the Sky Bike. A heavy weight hangs below the bicycle and keeps it balanced, so the rider stays safe. It is a simple lesson in the centre of gravity, taught in a way that people remember. Even visitors who never ride it tend to stop and watch, and the sound of the whole crowd quiets for a moment.

The institute is also an award giver. For about a century, it has presented medals to scientists and engineers. The list of past winners includes Albert Einstein, Marie Curie, Thomas Edison, and Nikola Tesla. Many winners later received Nobel Prizes too. This side of the institute is quieter than the exhibits, but it is important. The building is not only a place where science is shown. It is also a place where the city celebrates the people who move science forward.

Up in the newer wing, the focus turns inward to the human brain. This wing was added in the 2010s, and you can feel the change in style. Here the materials are glass and bright colour, not marble and dark wood. Near the old core of the building is the Fels Planetarium. It opened in the 1930s, and it was one of the first planetariums in the United States. Under its dome, the city lights disappear and the night sky returns, even at midday.

Before you leave, go back to the rotunda for a moment. Stand again in front of Franklin and listen to the room. The hum of the galleries is still there behind you. There are footsteps, laughter, and a child asking a question that no one can quite answer. Then step outside onto the Parkway. Notice the fountain at Logan Square, the traffic circling it, and the long view toward City Hall. Somewhere in that city of brick and stone, Franklin flew his kite and wrote his letters. This building was made to keep that curiosity going, so take a little of it with you as you walk.