The most extraordinary installation of Falconnier briques I've seen so far are at the Castel Béranger, #14 Rue La Fontaine, Paris, France, designed by architect Hector Guimard in 1898. This wild, Art Nouveau structure's crazy mix of styles earned it the nickname Castel Dérangé, but I'd say it's genius— and some call it Guimard's masterpiece. His use of Falconnier's briques for innovative decoration instead of plain function earn him the #1 spot in this gallery. These photos are all taken by, and appear here courtesy of Vincent Lajoinie, who debuted them on his Paris Archis (Paris Architecture) blog.

Pavel Trtik reports from the Czech republic of this excellent installation of Falconnier #8s and #9s at a hotel in spa Luhacovice, designed by architect Dušan Jurkovic in 1902. The octagonal structure is a stairwell. Full-size images can be found on Pavel's Dušan Jurkovic site here.

In 1898, the Maison Mumm built their new champagne cellars at Reims. The façade's main door was ornate metal surrounded by Falconnier bricks, which are now sadly gone. The two photos below are from period postcards, and the photo to the right by Jacques Mossot was taken March of 2008 and appears here courtesy Structurae.

Taco Hermans of the Netherlands Department for Conservation provided the following scans and photos:

Wassenbergh villa in the north of The Netherlands, ca 1905-1910
Inside View w/Dora & Marinus	Outside View, 1905	Outside View, ca 1910

Former School for Navigation in Rotterdam (Pieter de Hoochstraat 3), built in 1916; photos 2006
Taco reports: "The windows are situated in a wall between two toilets of which one has a window and the other gets light from that window through the glass bricks."

Unused, empty factory in Huy, Belgium with random emerald green briques

Taco visited the Huy (Hoei) factory, took this new set of pics, and retrieved some briques. The installation was even more important than the first pictures indicated: it has very unusual red bricks which appear to be colored with a coating on the inside, patterned windows on the upper floors, mixed windows of different type bricks, and has briques from a different manufacturer: Etablissements Gaston Blanpain-Massonet of Bruxelles, whose variation on the #8 pattern (with more concentric circles) is in a nice light rose glass. The factory has suffered at the hands of vandals, and many briques are missing or damaged. Hopefully what's left can be preserved!

The much less common #9 pattern are used in the basement window of this building in the village of Alblasserdam (Cortgene 127). Taken by a colleague of Taco's. The owner wishes to restore.

This amber half-brique sold on eBay to an unknown museum in France. The photos are from the auction, reproduced here courtesy the seller, Didier Leroy.

This blue No. 8 brique was won on eBay and is currently in my collection. The photos here are courtesy the seller, Sebastian Brösel.

This fantastic cobalt blue No. 7 brick was also won on eBay. A rare color and a rare style-- what a beauty! The photos are from the auction, reproduced here courtesy the sellers, Marie & Rodrigue Balaiz.