These medieval skyscrapers dominate the skyline of this small Tuscan town.

This is the oldest Roman-made bridge in the city still existing in its original state.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Pilgrimage site for star-crossed lovers.

Five candy-colored villages on the Italian Riviera.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Metal sculpture folk art lining the Kansas Highway.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The 28-foot granite map plots the locations of 40 theaters in New York City.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The final resting place of the great navigator, or maybe his brother.

A Civil War Museum with some notable medical antiques.

The highest peak in the state of Vermont has some interesting features.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

A winding district gerrymandered into the shape of a mantis.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

This downtown Dallas art installation is always on the lookout.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Iceland's tribute to its thankless civil servants.