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Padrão dos Descobrimentos (Portuguese pronunciation: [pɐˈdɾɐ̃w̃ duʃ dɨʃkubɾiˈmẽtuʃ]; lit. Monument to the Discoveries) is a monument on the northern margin of the Tagus River estuary, in the civil parish of Santa Maria de Belém, Lisbon. Located along the river were ships departed to explore and trade with India and Orient, the monument celebrates the Portuguese Age of Discovery (or Age of Exploration) during the 15th and 16th centuries.

Portugal ⁱ/ˈpɔrtʃʉɡəl/ (Portuguese: Portugal, IPA: [puɾtuˈɣaɫ]), officially the Portuguese Republic (Portuguese: República Portuguesa) is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the Azores and Madeira are part of Portugal. The country is named after its second largest city, Porto, whose Latin name was Portus Cale.

Sunset or sundown is the daily disappearance of the Sun below the horizon in the west as a result of Earth's rotation.

The time of sunset is defined in astronomy as the moment the trailing edge of the Sun's disk disappears below the horizon in the west. The ray path of light from the setting Sun is highly distorted near the horizon because of atmospheric refraction, making sunset appear to occur when the Sun’s disk is already about one diameter below the horizon. Sunset is distinct from dusk, which is the moment at which darkness falls, which occurs when the Sun is approximately eighteen degrees below the horizon. The period between sunset and dusk is called twilight.

Locations north of the Arctic Circle and south of the Antarctic Circle experience no sunset or sunrise at least one day of the year, when the polar day or the polar night persist continuously for 24 hours.

Sunset creates unique atmospheric conditions such as the often intense orange and red colors of the Sun and the surrounding sky.

Europe (pronunciation: /ˈjʊərəp/ yewr-əp or /ˈjɜrəp/ yur-əp) is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting the Black and Aegean Seas. Europe is bordered by the Arctic Ocean and other bodies of water to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and the Black Sea and connected waterways to the southeast. Yet the borders of Europe—a concept dating back to classical antiquity—are somewhat arbitrary, as the primarily physiographic term "continent" can incorporate cultural and political elements.

Santa Maria de Belém, or just Belém (Portuguese pronunciation: [ˈsɐ̃tɐ mɐˈɾiɐ dɨ bɨˈlɐ̃ȷ̃]), whose name is derived from the Portuguese word for Bethlehem, is a civil parish of the municipality of Lisbon, in central Portugal. At the mouth of the Tagus River it is located six kilometres west of the city centre and two kilometres west of Ponte 25 de Abril (25th of April Bridge).