This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

In an odd geographic anomaly this city borders two different states on opposite sides of town.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The most visited, and possibly most controversial, museum in Germany.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The "lovely red Vega" of the legendary record-settling pilot.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

There’s a hidden military meme engraved on the World War II Memorial.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Home to items never before seen by the public.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This small plaza encourages people diagnosed with cancer to never give up hope.

Just outside the Ohio Supreme Court sits a testament to justice.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The childhood home of one of Ohio's favorite sons, pilot and war hero Eddie Rickenbacker.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.