Crypt in HDR

Neo-romanesque crypt in Madrid once again. It's a really great place and I uploaded photos from there earlier: here, here and here. It's a small paradise for HDR photographers - great dynamic range, nice lights, beautiful textures. I could spend hours in there.

Technical details:
Camera: Canon 5D MK II
Lens: Canon 24-105 f/4 L IS USM
Focal length: 24 mm
Aperture: f/8.0
Exposure time: 4 s ("middle" exposure)
ISO: 400
Number of exposures: 5
E.V. Step: 1
Flash used: no
Tripod: yes
Filters: no
Technique: exposure fusion, luminosity masks
Software: Magic Lantern 2.3, Photomatix Pro 4.2.7 (Fusion/Natural), Lightroom 5.0, Photoshop CC