Answer the question at the end by quoting:

The Vicomte of Bragelonne: Ten Years Later (French: Le Vicomte de Bragelonne ou Dix ans plus tard [l@ vikot d@ bRaZ@lon u diz_a ply taR]) is a novel by Alexandre Dumas.
After 35 years of loyal service, d'Artagnan resigns as lieutenant of the Musketeers as he perceives the young king Louis XIV as weak-willed. He resolves to aid the exiled Charles II to retake the throne of England, unaware that Athos is attempting the same. With their assistance Charles II is restored to the throne and d'Artagnan is rewarded richly.  In France, Cardinal Mazarin has died, leaving Louis to assume power with Jean-Baptiste Colbert as his finance minister. Colbert has an intense hatred for his superior the king's Superintendent of Finances, Nicolas Fouquet, and tries to bring about his fall. He brings to the king's attention that Fouquet is fortifying his fief of Belle Ile secretly. Louis persuades d'Artagnan to re-enter his service, and tasks him to investigate Belle Ile, promising him a substantial salary and promotion to Captain of the King's Musketeers on his return. Louis, finally growing into a decisive ruler, also accepts an offer relayed by Athos from Charles II to marry his brother Philippe I, Duke of Orleans to Charles' sister Henrietta Anne Stuart.  D'Artagnan confirms that Belle Ile is being fortified and the architect ostensibly in charge is Porthos, though the blueprints show the handwriting of Aramis, who is now the bishop of Vannes. Aramis, suspicious of d'Artagnan, sends Porthos back to Paris to warn Fouquet, whilst tricking d'Artagnan into searching for Porthos around Vannes. Porthos warns Fouquet in the nick of time, and he cedes Belle Ile to the king, humiliating Colbert. On returning from the mission, d'Artagnan is made Captain of the King's Musketeers anyway.  Meanwhile, Princess Henrietta arrives in France escorted by the second Duke of Buckingham, to be met by an embassy consisting of Raoul de Bragelonne, his close friend Armand de Gramont, Comte de Guiche, and the Comte de Wardes, son of the previous Comte de Wardes from The Three Musketeers. The erratic Buckingham is madly in love with the princess and can scarcely conceal it, while Guiche soon finds himself equally smitten. Philippe, though little attracted to women, becomes horribly jealous of Buckingham and has him exiled after the wedding.

What did he find during his investigation?

D'Artagnan confirms that Belle Ile is being fortified and the architect ostensibly in charge is Porthos,

IN: Therion (formerly Blitzkrieg, Megatherion) is a Swedish symphonic metal band founded by Christofer Johnsson in 1988. Its name was inspired by the Celtic Frost album To Mega Therion. "To Mega Therion" is Greek for "The Great Beast" and was a title used by occultist Aleister Crowley. Originally a death metal band, Therion adjusted its musical style by adding orchestral elements, including choirs, classical musicians, and even a full orchestra at their concert performances.

On September 2006, Johnsson announced that recording was completed for a new album with 9 songs written by then drummer, Petter Karlsson. Gothic Kabbalah was released on 12 January 2007, and was followed with a tour through Europe, North and South America with Grave Digger and with support act Sabaton. Therion also toured Japan for the first time. The band's Warsaw gig was recorded for the live album and video set Live Gothic, which was released in 2008.  In these times Therion held live shows that included local symphonic orchestras and choirs. The "Therion Goes Classic" show took place on 9 December 2006, in Bucharest, Romania. Another show followed at the Miskolc Opera Festival in Miskolc, Hungary on 16 June 2007, with future band member Lori Lewis as its featured vocalist. The first half of the show featured orchestral pieces from Dvorak, Verdi, Mozart, Saint-Saens and Wagner. The second half pulled from Therion's repertoire. The song "Clavicula Nox" was featured as a full orchestral version in the first half. The Bucharest concert was broadcast on Romanian television, and its first part was later released together with the entire Miskolc concert as the DVD/CD box set The Miskolc Experience in June 2009.  In November-December 2007, Therion had a 20-year anniversary tour with 16 shows in Europe. Songs included "Kali Yuga" parts 1 and 2, the entire Theli album, and "Adulruna Rediviva". Part of the set list was determined from fan voting. Some songs were accompanied by keyboardist Ferdy Doernberg and a belly dancer on stage, and some of the shows featured also the ex-singers Piotr Wawrzeniuk and Mats Leven. The Budapest gig of the tour was recorded, but it was released only in February 2014 as a part of the DVD Adulruna Rediviva And Beyond.

What countries did they go to in Europe?

OUT:
The "Therion Goes Classic" show took place on 9 December 2006, in Bucharest, Romania.