Sam and companions traveled to Seville by train October 19, 1867, arriving at midnight.
On October 22, they boarded a train for Cadiz.
Mark Twain Project: Quaker City Itinerary

Sam and companions travel by horseback and carriage to Algeciras, Vejer and San Fernando from Gibraltar, on October 18, 1867.
Mark Twain Project: Quaker City Itinerary

Cape Spartel is frequently but incorrectly referred to as the northernmost point of Africa, which is instead Ras ben Sakka, Tunisia. It is the most North Western point of mainland Africa. The cape rises to a height of 326 m. at the top of Jebel Quebir where there is a tower.

Tétouan (Arabic: تطوان‎, Berber languages: ⵜⵉⵟⵟⴰⵡⵉⵏ, romanized: Tiṭṭawin, Spanish: Tetuán), nicknamed the White Dove (Arabic: الحمامة البيضاء‎), is a city located in northern Mo

Apes' Hill, Pillars of Hercules

Jebel Musa (Arabic: جبل موسى‎, Jabal Mūsā, in Berber Adrar n Moussa; meaning Mount Moses) is a mountain in the northernmost part of Morocco, on the African side of the Strait of Gibraltar. It is part of the Rif mountain chain. The mountain is generally identified as the southern Pillar of Hercules, Abila Mons.
https://en.wikipedia.org/wiki/Jebel_Musa_(Morocco)

Monte Hacho is a low mountain that overlooks the Spanish city of Ceuta, on the north coast of Africa.