On the embankment located approximately one kilometer north of the village of Sikapel at the mouth of the Siskeld River in the Netherlands. This small lighthouse is made of cast iron and was built in 1875 by Quirinus Harder, who designed multiple Dutch lighthouses. The lighthouse is manufactured by the NeringB ö gel iron factory in Devonte. The lighthouse, along with the lights of the Great Lighthouse, guides ships through the Oostgat Channel in Siskeld. The main body of the lighthouse is red with a white stripe. The light from the lighthouse comes in three colors: red, white, and green. These colors are separated by shading boards.

A lighthouse located at the northwest end of the Reykjavik Peninsula in Iceland. Designed by engineer AxeSvensson, it was built in 1944 to replace the old lighthouse, which was considered unsafe due to rising sea levels and coastal erosion. The new lighthouse is 28.6 meters high and is a concrete structure designed with durability and functionality in mind to adapt to the harsh marine environment in the region. It is an important landmark for navigation and has also become an important tourist attraction in the region, known for its unique architectural style and spectacular natural scenery around it.

A historic lighthouse located in Baltimore, Maryland, USA. Built in 1856, it is the oldest existing spiral pile lighthouse in the Chesapeake Bay area. Originally built at the entrance of the Patapsco River in Chesapeake Bay, it was later relocated to its current location and became part of the Baltimore Maritime Museum. The design is unique, entirely made of iron and featuring a circular design, which is unparalleled among the spiral pile lighthouses in the Chesapeake Bay area. It is also one of the earliest lighthouses to use prefabricated components, which allows certain parts to be transported to the site and quickly assembled. It is an important symbol of American maritime history.

The lighthouse is a high tower-shaped building. The lighting equipment is installed on the top of the tower. The location should be prominent, and attention should be paid to its specific architectural shape, which is easy for ships to distinguish and becomes one of the highest points of the port. Because the surface of the earth is curved, the tower body must have sufficient height so that the light can be seen by long-distance ships, and the general sight distance is 15-25 nautical miles. However, the light should not be too high to avoid being obscured by clouds and fog from high places. According to the size of the lighthouse and the characteristics of the location, the lighthouse can be guarded or unguarded, and important lighthouses should be guarded.