Chris Harrison hits the road with super fans, revisiting some of the most memorable dates and unforgettable moments from The Bachelorette and The Bachelor history, leading to a reunion.

Hannah meets 30 hopeful bachelors, while Demi Burnett and Katie Morton gather intel on the men; 22 suitors remain at the end of the night.

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Actors Jason Biggs and Jenny Mollen take eight surprised bachelors to a birthing class; the bachelorette gets a real-life health scare and one man comes to her rescue; Lukas Graham performs Love Someone.

Hannah and the remaining 15 men travel to Boston and Newport, R.I.

A front-runner finally gets a one-on-one date with Hannah in the breathtaking scenery of Scotland; a group of 10 suitors -- wearing Scottish kilts -- compete in the first ever Bachelorette Highland Games.

Frustrated with the drama, a fresh start in Riga, Latvia, prompts Hannah to examine her relationships and decide whether she can continue.

Hannah takes her first one-on-one date bungee jumping; two rivals face off in a wrist wrestling competition; Hannah and a date learn about a Latvian spa ritual.

Hannah and a date take a romantic boat trip along Amsterdam's canals; a bachelor puts his heart on the line; prompting Hannah to make an unexpected decision; the three-on-one date becomes explosive.

Hannah visits the hometowns and families of the final four bachelors.

Hannah and Peter enjoy time aboard a luxury yacht; after a day at the spa with Tyler, Hannah hopes to build her emotional relationship with him; Hannah discusses her other relationships with Jed; Luke shares his feelings on the fantasy suite.

Hannah faces the men she rejected, and the 17 jilted bachelors confront her; Luke P.'s stunning final standoff in Greece is revealed; a preview of Season 6 of Bachelor in Paradise.

A single bachelorette dates multiple men over several weeks, narrowing them down to hopefully find her true love.

A single bachelorette dates multiple men over several weeks, narrowing them down to hopefully find her true love.