Name and Location

The Undefined Lighthouse is located at JR6H+R7 Koto City, Tokyo, Japan, situated near the confluence of the Sumida River and Tokyo Bay. Its coordinates are 35.6120426° N, 139.8281286° E.

Construction and History

Unfortunately, no information is available on the lighthouse's construction or historical significance.

Architecture and Materials

The Undefined Lighthouse stands at a height of 16 meters, suggesting it may be a humble structure designed to serve as a secondary aid to navigation. Unfortunately, no information is available on its architectural style or construction materials.

Light and Navigation

The lighthouse emits an Iso red light with a period of 4 minutes and a range of 12 nautical miles, in accordance with international standards for minor seamarks.

Accessibility and Visiting

Unfortunately, no information is available on whether visitors can enter the structure or access its surroundings. The lighthouse has been automated since its construction, eliminating the need for manual operation by a lighthouse keeper.

Notable Views and Landscape

The undefined lighthouse stands amidst a bustling metropolis, with nearby attractions such as Tokyo Bay and the Sumida River offering scenic views. The surrounding environment is characterized by urban development, with the sounds of traffic and city life dominating the area's atmosphere.

Technical and Operational Details

The Undefined Lighthouse has been automated since its construction, eliminating the need for manual operation by a lighthouse keeper. Although no information is available on whether it still functions for navigation, its historical significance lies in providing a secondary aid to mariners navigating Tokyo Bay and the Sumida River.

Further Information

• 1. United States National Geospatial-Intelligence Agency (US NGA). Pub. 112. 2009-11-12.