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” .

Bad Wimpfen is a historic spa town in the district of Heilbronn in the Baden-Württemberg region of southern Germany. It lies north of the city of Heilbronn, on the river Neckar. https://en.wikipedia.org/wiki/Bad_Wimpfen

Heidelberg Castle must have been very beautiful before the French battered and bruised and scorched it two hundred years ago. The stone is brown, with a pinkish tint, and does not seem to stain easily. The dainty and elaborate ornamentation upon its two chief fronts is as delicately carved as if it had been intended for the interior of a drawing-room rather than for the outside of a house. Many fruit and flower clusters, human heads and grim projecting lions' heads are still as perfect in every detail as if they were new. But the statues which are ranked between the windows have suffered.

HOHENBADEN OLD CASTLE - Altes Schloss Hohenbaden, is high above Baden-Baden and one of three castles that defended the most prized territory of the Margraves of Baden, from the 11th - 15th century. Built in 1102, today its ruins and those of the newer "extension", Unterburg (lower castle) from the late 14th century, offer spectacular views over Baden-Baden, the Black Forest and the Rhine Valley.

The Neue Schloss on a hill to the N. of the town founded in 1479 enlarged in 1519 and dismantled in 1689 was afterwards partially restored.
It is now a summer-residence of the Grand Duke and is comfortably fitted up containing some good modern pictures carving family-portraits etc. The curious subterranean vaults with stone and iron doors were probably once used as dungeons. 

Bædeker The Rhine from Rotterdam to Constance (1873) Route 34 page 196

May 24—Theatre, Mannheim —Lear—performance began at 6 Sharp. Never understood a word—Gr grumbling—by & by terrific & perfectly natural peal of thunder & vivid lightning. Gr— “Thank heaven it thunders in English, anyway.”

At home—Sat 3 hours & never understood a word but the Thunder & lightning.” [MTNJ 2: 85]

May 30: I will say this much for Lohengrin on my own account: it accomplished for me what no circumstance or combination of circumstances has ever been been able to do before, since I first saw the light of this world: it gave me a headache.

Worms (German pronunciation: [vɔʁms] ⓘ) is a city in Rhineland-Palatinate, Germany, situated on the Upper Rhine about 60 km (40 mi) south-southwest of Frankfurt am Main. It had about 84,646 inhabitants as of 2022.

A pre-Roman foundation, Worms is one of the oldest cities in northern Europe. It was the capital of the Kingdom of the Burgundians in the early fifth century, hence is the scene of the medieval legends referring to this period, notably the first part of the Nibelungenlied.

May 1, 1878

From CASSEL to Wilhelmshöher

Carriage to the Pensionshaus 8 to the Hôtel Schombardt and tho Palace 9, to the Cascades 12, to the Riesenschloss 15 m., including the drive back and fee. Cab with one horse (’Droschke’) to the Hôtel Schombardt or Pensionshaus, 1 pers. 2 m., 2 pers. 2 m. 20, 3-4 pers. 2 m. 50 pf.; returnfare one-half; the driver is bound to wait 1/2 hr. without extra charge. On Sundays more is demanded.