Self-guided Sightseeing Tour #4 in Seoul, South Korea

The National Police Museum (警察博物館) was opened on October 14, 2005 and is located at 162 Songwol-gil, Jongno-gu, Seoul. It is a museum where you can learn about the history of the police at a glance through clothing and equipment, and you can experience the work of the police firsthand through various contents.

Wikipedia: 경찰박물관 (대한민국) (KO), Website

Hong Nan-pa was a Korean composer, violinist, conductor, music critic and educator. He is best known as the composer of Bongseonhwa written in 1919. It is generally considered as the first true Korean original song composed in Western style. It was widely sung during the period. Hong also contributed to developing Korean culture during the period with his diverse cultural activities.

Wikipedia: Hong Nan-pa (EN), Website

Gyeonghui Palace, literally Palace of Serene Harmony is a palace located in Seoul, South Korea. It was one of the "Five Grand Palaces" built by the Joseon Dynasty.

Wikipedia: Gyeonghuigung (EN), Website

Sejong Center for the Performing Arts (Korean: 세종문화회관) is the largest arts and cultural complex in Seoul, South Korea. It has an interior area of 53,202m². It is situated in the center of the capital, on Sejongno, a main road that cuts through the capital city of the Joseon Dynasty. The center took 4 years to complete, opening in 1978. It was "built as a cultural center for Seoulites". It currently contains one of the biggest pipe organs in Asia.

Wikipedia: Sejong Center (EN), Website

An armillary sphere is a model of objects in the sky, consisting of a spherical framework of rings, centered on Earth or the Sun, that represent lines of celestial longitude and latitude and other astronomically important features, such as the ecliptic. As such, it differs from a celestial globe, which is a smooth sphere whose principal purpose is to map the constellations. It was invented separately, in ancient China possibly as early as the 4th century BC and ancient Greece during the 3rd century BC, with later uses in the Islamic world and Medieval Europe.

Wikipedia: Armillary sphere (EN)

Cheugugi is the first well-known rain gauge invented and used during the Joseon dynasty of Korea. It was invented and supplied to each provincial offices during the King Sejong the Great's reign. As of 2010, only one example of the Cheugugi remains, known as the Geumyeong Cheugugi, which literally means "Cheugugi installed on the provincial office's yard." It is designated as National Treasures #561 of Korea and was installed in provincial office of Gongju city, 1837 by King Yeongjo, the 21st king of Joseon. In addition, the official record of the rainfall by Cheugugi from King Jeongjo's reign to Emperor Gojong's reign is preserved.

Wikipedia: Cheugugi (EN)

The Anbu Ilgu (仰釜日晷) is a sundial that has been produced and used since the 16th year of King Sejong the Great of Joseon in 1434, and was designated as Treasure No. 845 of the Republic of Korea on August 9, 1985 in recognition of its scientific, historical, and artistic value. Jang Young-sil, Icheon, and Kim Jo participated in the early production of the Anbuilgu, and since there are no surviving Anbuilgu made at this time, the 18th-century Anbuilgu was designated as a treasure. Designated as a treasure, the portable anbuilgu was made by Kang-gun and is small enough to fit in a pocket. In addition, there are Jang Young-sil's inventions, such as the Pavilion Tower, the Honcheonui, the Sundial, the Water Clock, and the Celestial Train Field Map.

Wikipedia: 앙부일구 (KO)