Editing Rimini (section)

=== Natural features ===
Rimini's natural geography provides a strategically-important passage along the [[Adriatic Sea]] at the boundary between [[northern Italy]], characterised by the plains of the [[Po Valley]], and [[central Italy]], characterised by more mountainous terrain. For its geographical position and its climatic features, Rimini is situated on the edge between the Mediterranean and the central European [[microclimate]]s,<ref>''Emilia-Romagna'', Milano, Touring Club Italiano, 1999, p. 27</ref><ref>Pietro Zangheri, ''Repertorio sistematico e topografico della flora e fauna vivente e fossile della Romagna'', Tomo V, Museo civico di Storia Naturale di Verona, Verona, 1966–1970, p. 2052.</ref> providing an environment of notable naturalistic value.

==== Beach ====
[[File:Rimini banner.jpg|thumb|upright=2.5|Panoramic view of Rimini Beach]]Rimini's coastal strip, made of recent marine deposits, is edged by a fine sandy beach, {{convert|15|km|mi|abbr=off|adj=off}} long and up to {{convert|200|m|ft|abbr=off|adj=off}} wide, interrupted only by river mouths and gently shelving towards the sea. Along the coastline, there is a low sandy cliff, created by the rising sea in around 4000 BC, partly conserved north of Rimini, between Rivabella and [[Bellaria-Igea Marina]], approximately {{convert|1.3|km|mi|abbr=off|adj=off}} from the coast.<ref>''PSC Comune di Rimini, Quadro Conoscitivo, Sistema Ambientale. Geologia'', p. 15.</ref>

Rimini's ancient coastline was situated much farther inland: it gradually shifted outward over centuries, with new land developed throughout the 20th century.<ref name="coastevolution">{{cite book |last1=Gambolati |first1=G. |url=https://www.researchgate.net/publication/300046774 |title=CENAS: Coastline Evolution of the Upper Adriatic Sea due to Sea Level Rise and Natural and Anthropogenic Land Subsidence |last2=Giunta |first2=G. |last3=Putti |first3=M. |last4=Teatini |first4=P. |last5=Tomasi |first5=L. |last6=Betti |first6=I. |last7=Morelli |first7=M. |last8=Berlamont |first8=J. |last9=De Backer |first9=K. |date=1998 |isbn=978-94-011-5147-4 |series=Water Science and Technology Library |volume=28 |pages=1–34 |chapter=Coastal Evolution of the Upper Adriatic Sea due to Sea Level Rise and Natural and Anthropic Land Subsidence |doi=10.1007/978-94-011-5147-4_1 |issn=0921-092X |last10=Decouttere |first10=C. |last11=Monbaliu |first11=J. |last12=Yu |first12=C.S. |last13=Brøker |first13=I. |last14=Christensen |first14=E.D. |last15=Elfrink |first15=B. |last16=Dante |first16=A. |last17=Gonella |first17=M.}}</ref>

==== Rivers and streams ====
[[File:PONTE di TIBERIO vista aerea.JPG|thumb|An aerial view of [[Ponte di Tiberio (Rimini)|Ponte di Tiberio]], at the end of Rimini's canal port, showing the XXV April Park in the background along which the [[Marecchia]] used to flow, in September 2015]]
Rimini's city centre was founded between two rivers: the [[Marecchia]] and the [[Ausa (river)|Ausa]]. Until the 1960s, the Ausa flowed south of Rimini's city centre, running between the present-day Rimini Sud junction of the [[Autostrada A14 (Italy)|A14 tolled highway]] and the [[Arch of Augustus (Rimini)|Arch of Augustus]], where it turned north-east along the old city walls to empty at Piazzale Kennedy. From the 1960s, the Ausa was diverted to flow parallel to the {{Interlanguage link|SS16|it|Strada statale 16 Adriatica}} state road along cemented banks, and empty into the Marecchia.<ref name="Rimini-2022">{{cite web |title=Parco Ausa |trans-title=Ausa Park |url=https://www.ecomuseorimini.it/parco-ausa/ |access-date=14 March 2022 |publisher=Ecomuseo Rimini |language=it-IT}}</ref> The diversion was completed in 1972, with the Ausa's former route reduced to a sewage outlet,<ref>{{Cite web |last= |first= |date=7 August 2023 |title=7 agosto 1763 - La burrasca spazza via tutte le barche nel porto di Rimini |trans-title=7 August 1763 – The storm sweeps away all the boats in the port of Rimini |url=https://www.chiamamicitta.it/7-agosto-1763-bufera-distrugge-tutte-le-barche-nel-porto-rimini/ |access-date=3 January 2024 |website=Chiamami Città |language=it-IT}}</ref> and redeveloped into a series of public parks.<ref name="Rimini-2022" />

The Marecchia itself, which flows north of Rimini, was also deviated to empty into the Adriatic Sea further north, between San Giuliano Mare and Rivabella. The deviation was prompted because the river was subjected to periodic, destructive floods near its mouth, where the riverbed became narrow after various bends. The ancient riverbed is still used as Rimini's harbour.<ref>''L'Emilia-Romagna paese per paese'', Firenze, Bonechi, 1984, p. 250.</ref>

Rimini's southern boundary with the municipality of Riccione is marked by the Rio dell'Asse, a minor stream.<ref>{{Cite web |last=Masini |first=Manlio |date=2 November 2022 |title=La contesa tra Rimini e Riccione sui confini e il ponte sul Marano |trans-title=The dispute between Rimini and Riccione over their borders and the bridge over the Marano |url=https://www.corriereromagna.it/la-contesa-tra-rimini-e-riccione-sui-confini-e-il-ponte-sul-marano/ |access-date=30 June 2023 |website=[[Corriere Romagna]] |language=it-IT}}</ref><ref>{{Cite web |title=Referendum popolari 2003 |trans-title=Popular referenda 2003 |url=https://www.comune.rimini.it/documenti/referendum-popolari-2003 |access-date=30 June 2023 |publisher=Comune di Rimini |language=it}}</ref>

==== Hills ====
[[File:Veduta di San Marino da Montecieco (RN).JPG|thumb|right|View of [[Monte Titano]], [[San Marino]], from Monte Cieco, on the road between Rimini and Santa Cristina]]

To its southwest, Rimini is surrounded by several rolling hills: Covignano ({{convert|153|m|ft|abbr=off|adj=off}} altitude), Vergiano ({{convert|81|m|ft|abbr=off|adj=off}} altitude), San Martino Monte l'Abbate ({{convert|57|m|ft|abbr=off|adj=off}} altitude) and San Lorenzo in Correggiano ({{convert|60|m|ft|abbr=off|adj=off}} altitude). The hills are widely cultivated, with vineyards, olive groves and orchards, and historic villas.