Gravedona ... is situated at the mouth of a gorge. The handsome Palazzo del Pero with four towers, at the upper end, was built in 1586 by Pellegrino Tibaldi for the Milanese Cardinal Tolomeo Gallio.

Native Americans inhabited what is now northeastern Massachusetts for thousands of years prior to European colonization of the Americas.

Rondout (pronounced "ron doubt"), is situated on the Hudson River, at the mouth of Rondout Creek. Originally a maritime village serving the nearby city of Kingston, New York, Rondout merged with Kingston in 1872. It now includes the Rondout-West Strand Historic District.

https://en.wikipedia.org/wiki/Rondout,_New_York

Mark Twain would have needed to cross the Hudson River on a ferry boat to reach Rondout>

First of the New Hampshire Grants, Bennington was chartered on January 3, 1749, by Colonial Governor Benning Wentworth and named in his honor.

Orion Clemens moved there in September of 1853 and ran the Muscatine Journal.  Sam joined him for an undetermined period of time, ending in August of 1854.

The Clemens family moved to Hannibal in November of 1839,  

Hannibal by 1844 took pride in four general stores, three sawmills, two planing mills, three blacksmith shops, two hotels, three saloons, two churches, two schools, a tobacco factory, a hemp factory, and a tan yard, as well as a flourishing distillery up at the still house branch. West of the village lay “Stringtown,” so called because its cabins and stock pens were strung out along the road. Small industry was the lifeblood of the town [Wecter 60].

Orion Clemens and his wife had settled there in June of 1855,  Sam, and younger brother Henry, helped Orion publish the Keokuk Journal out of a building at 202 Main Street.  Sam lived at First and Johnson Streets.  By late 18i55 Sam was across the river in Warsaw, Illinois working a for another newspaper. By the fall of 1856, Sam had left for Cincinnati.  Orion departed Keokuk for Nevada  but eventually returned to stay in 1872.

In 1882:

Visited by Twain October 19, 1895

Great Western is a town in the east of the Wimmera region of Victoria, Australia. The town is located on the Western Highway, in the Shire of Northern Grampians local government area, 225 kilometres north west of the state capital, Melbourne. The town has a population of 644.

Haßmersheim is a town in the district of Neckar-Odenwald-Kreis, in Baden-Württemberg, Germany. Likely to location refered to in Day By Day as Jagtfeldt. (sic Jagstfeld)

Sam’s notebook:
“Hasshersheim (?) town where we tarried & took beer & H [Twichell] went swimming above where 25 girls were & was warned away. Below this town on right bank, 200 ft up on top of the steep bank, castle of Hornberg, high old vine clad walls enclosing trees, & one peaked tall tower 75 ft high” .

Bluff is a town and seaport in the Southland region, on the southern coast of the South Island of New Zealand. It is the southern-most town in New Zealand (excluding Oban) and, despite Slope Point and Stewart Island being further to the south, is colloquially used to refer to the southern extremity of the country (particularly in the phrase "from Cape Reinga to The Bluff").

"We stopped at the village of Bethany, an hour out from Jerusalem. They showed us the tomb of Lazarus. I had rather live in it than in any house in the town. And they showed us also a large "Fountain of Lazarus," and in the centre of the village the ancient dwelling of Lazarus. Lazarus appears to have been a man of property. The legends of the Sunday Schools do him great injustice; they give one the impression that he was poor. It is because they get him confused with that Lazarus who had no merit but his virtue, and virtue never has been as respectable as money.

The construction of the navigable Battaglia canal in the early 13th century brought traffic and growth to the town which commanded a central position at the confluence of several canals in the network of barge traffic that linked Este and Padua, the Adriatic, the Lagoon of Venice and the north by means of the Brenta Canal, the canalized Bacchiglione and the Adige.

Aquino is a town and comune in the province of Frosinone, in the Lazio region of Italy, 12 kilometres (7 mi) northwest of Cassino.

The town presents few objects of interest. Following the Roman road to the S. for 1/2 M., we see, on the right, the colossal remains of an Amphitheatre, which, according to an inscription preserved at Monte Cassino , was erected by Ummidia Quadratilla at her own expense. The foundress is mentioned by Pliny in his letters (vii. 24) as a lady of great wealth, who even in her old age was an ardent admirer of theatrical performances. A little higher up stands a square monument built of large blocks of travertine, now converted into the church Del Crocefisso (custodian 15-20 c.