This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

The only subway station in the city that still makes use of gap fillers.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

The location where the iconic movie character declared it was time to go home.

An institution dedicated to the towering buildings that make up skylines in New York City and around the world.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

These markers are used to document elevation changes around the famed dam.

The mounds at this site were reconstructed with the help of archaeologists and historians.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

Most-visited and most-photographed slot canyon in the American Southwest.

This Moab institution functions as both a rock store and a small natural history museum.

The last SR-71 ever constructed.

Visitors to this library are in for a real-world education in modernist architecture.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

The fifth-longest natural arch in the world, and the longest outside China.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

The second-highest train station in Europe.

A daily replay of the experiment that proved the rotation of the Earth.