'Lighthouse tower' is a proposal by Mikou design studio for the Brazilian city of Rio de Janeiro. Designed as an arch at the entrance to the city, the tower is rooted on the island of Cotunduba and is accessible itself to the sea via a large jetty. It consists of observation points, an auditorium, skywalk, bungee jump platform, climbing tower, gyrodrop, cafétéria, souvenir store, urban balconies, multi-usage space.