Question: One of the UNESCO World Heritage Site's is a royal palace originally developed by who?
Context: The Waldschlösschen Bridge (German: Waldschlößchenbrücke or Waldschlösschenbrücke ) is a road bridge across the Elbe river in Dresden.  The bridge was intended to remedy inner-city traffic congestion.  Its construction was highly controversial, as the Dresden Elbe Valley had been declared a UNESCO World Heritage Site and UNESCO expressed strong concerns against the bridge, noting its intent to withdraw the World Heritage title if the bridge were built.  As a result of this project, the Dresden Elbe Valley was listed in 2006 as an "Endangered World Heritage Site" (one of two in Europe, the Medieval Monuments in Kosovo being the other one), and in 2009 became only the second World Heritage Site to be de-listed. The Royal Palace of Turin (Italian: "Palazzo Reale di Torino" ) is a historic palace of the House of Savoy in the city of Turin in Northern Italy.  It was originally built in the 16th century and was later modernized by Christine Marie of France (1606–63) in the 17th century, with designs by the Baroque architect Filippo Juvarra.  The palace also includes the Palazzo Chiablese and the Chapel of the Holy Shroud, the latter of which was built to house the famous Shroud of Turin.  In 1946, the building became the property of the state and was turned into a museum.  In 1997, it was placed on the UNESCO World Heritage Site list along with 13 other residences of the House of Savoy. Białowieża Forest (Belarusian: Белавежская пушча, "Biełaviežskaja Pušča" ; Polish: "Puszcza Białowieska"   ] ; Russian: Беловежская пуща, "Belovezhskaya Pushcha" ) is one of the last and largest remaining parts of the immense primeval forest that once stretched across the European Plain.  The forest is home to 800 European bison, Europe's heaviest land animal.  UNESCO’s Man and the Biosphere Programme (MAB) designated the Polish Biosphere Reserve "Białowieża " in 1976 and the Belarusian Biosphere Reserve "Belovezhskaya Puschcha " in 1993.  In 2015, the Belarusian Biosphere Reserve occupied the area of 216,200 ha , subdivided into transition, buffer and core zones.  The forest has been designated a UNESCO World Heritage Site and an EU Natura 2000 Special Area of Conservation.  The World Heritage Committee by its decision of June 2014 approved the extension of the UNESCO World Heritage site “Belovezhskaya Pushcha/Białowieża Forest, Belarus, Poland”, which became “Białowieża Forest, Belarus, Poland”.  It straddles the border between Poland (Podlaskie Voivodeship) and Belarus (Brest and Grodno "voblast "s), and is 70 km north of Brest, Belarus and 62 km southeast of Białystok, Poland.  The Białowieża Forest World Heritage site covers a total area of 141,885 ha . Lingering Garden (; Suzhou Wu: Leu yoe, ] ) is a renowned classical Chinese garden.  It is located at 338 Liuyuan Rd.  Suzhou, Jiangsu province, China (留园路338号).  It is recognized with other classical Suzhou gardens as a UNESCO World Heritage Site.  In 1997, the garden, along with other classical gardens in Suzhou, was recorded by UNESCO as a World Heritage Site.  The garden also stores two UNESCO Intangible World Heritage Arts; Pingtan (评弹) and Guqin music. The Alcázar of Seville (Spanish "Reales Alcázares de Sevilla" or "Royal Alcazars of Seville", (] )) is a royal palace in Seville, Andalusia, Spain, originally developed by Moorish Muslim kings. The UNESCO World Heritage Site Historic Monuments of Ancient Nara encompasses eight places in the old capital Nara in Nara Prefecture, Japan.  Five are Buddhist temples, one is a Shinto shrine, one is a Palace and one a primeval forest.  The properties include 26 buildings designated by the Japanese Government as National Treasures as well as 53 designated as Important Cultural Properties.  All compounds have been recognized as Historic Sites.  The Nara Palace Site was designated as Special Historic Site and the Kasugayama Primeval Forest as Special Natural Monument.  Tōdai-ji, Kōfuku-ji and the Kasugayama Primeval Forest overlap with Nara Park, a park designated as one of the "Places of Scenic Beauty" by the Ministry of Education, Culture, Sports, Science and Technology (MEXT).  UNESCO listed the site as World Heritage in 1998. The Cornwall and West Devon Mining Landscape is a World Heritage Site which includes select mining landscapes in Cornwall and West Devon in the south west of England.  The site was added to the World Heritage List during the 30th Session of the UNESCO World Heritage Committee in Vilnius, July 2006.  Following plans in 2011 to restart mining at South Crofty, and to build a supermarket at Hayle Harbour, the World Heritage Committee drafted a decision in 2014 to put the site on the List of World Heritage in Danger, but this was rejected at the 38th Committee Session at Doha, Qatar (July 2014), in favour of a follow-up Reactive Monitoring Mission. The Royal Palace of Caserta (Italian: "Reggia di Caserta" ] ; Neapolitan: "Reggia 'e Caserta" ) is a former royal residence in Caserta, southern Italy, constructed for the Bourbon kings of Naples.  It is one of the largest palaces erected in Europe during the 18th century.  In 1997, the palace was designated a UNESCO World Heritage Site; its nomination described it as "the swan song of the spectacular art of the Baroque, from which it adopted all the features needed to create the illusions of multidirectional space".  In terms of volume, the Royal Palace of Caserta is the largest royal residence in the world with over 2 million m³ and covering an area of about 235,000 m². There are numerous sights and landmarks of Seville.  The most important sights are the Alcázar, the Seville Cathedral, and the "Archivo General de Indias" (General Archive of the Indies), which are UNESCO World Heritage Sites. The Bahrain Pearling Trail or Bahrain Pearling Pathway is a serial cultural heritage site inscribed on the UNESCO World Heritage List in 2012.  It consists of 3 oyster beds in the Bahrain northern waters, a segment of the coast and the seafront Bu Mahir fortress in the southern tip of Muharraq, and 17 buildings in Muharraq historical town connected by a 3.5 km visitor pathway.  The Site was inscribed as a UNESCO World Heritage Site on June 30, 2012 and is Bahrain's second World Heritage Site after the Bahrain Fort.
Answer: Moorish Muslim kings