3. Bicentennial Lighthouse, Argentina
Designed by Alejandro Cohen and built in the style of structural expressionism, this lighthouse was created as a tribute to the Argentina Bicentennial. The structure is an 80-metre-tall partial helix with a ninety-degree twist.
4. Yokohama Marine Tower, Japan
The light characteristic is marked by a flash every twenty seconds, whereby the light’s colour is alternating red and green. Originally, at night, the tower shaft itself was lit green and red according to its markings, but now, after the reopening on May 2009, the lights are white.