Science in Leiden

A monument to the 16th-century mathemetician who dedicated his life to calculating the numerical value of pi.

The world's first transgenic bovine has been preserved at the museum where he spent his final years—though his old stable is now a cafe.

The house of physicists Paul Ehrenfest was also a temporary dwelling and study for his good friend Albert Einstein.

Albert Einstein would often sit in this chair during visits to the observatory to discuss science with Willem de Sitter.

For over 100 years the most important physicists in the world have autographed this university wall.

A plaque hidden in the law faculty at Leiden University honors the first scientist to make liquid helium.

Once the world's biggest telescope, it was later used as a coat hanger by a famous Dutch astronomer.

Science meets wall art to highlight the beauty of famous mathematical equations.

One of the great math minds of the 17th century is underfoot in this 900 year old Dutch church.

A lecture hall sink once used by Einstein and other noted physicists is now regarded as a strange science relic.