The theme is chosen by the winner of the month April, Caleidoscope ... The new theme for May is "Architecture"

Have fun!

The rules:   
 -Only pure fractal renders with basic post editing allowed (like contrast, saturation..)
 - 2D and 3D fractals are allowed, but only one entry a member.  (for now)
 - The winner may choose the next months topic (own idea or chosen from "contest ideas"-thread.)
 - To participate, just post in this thread and attach the image to your post. (don't use the gallery)
    Please give it a good name, good resolution and add interesting info like software/formula used, parameter sharing is very welcome!

The other rules are the same as with the normal Image of the month contest.
In short:

We start the first day of the month, participate, during this time you can even change entry, whatever, until the end of the 14th of the month.  (A'dam time: Check your local time here:
https://www.timeanddate.com/worldclock/netherlands/amsterdam
Any entry after midnight will be removed without warning, even if the topic was not locked at the time. (my fault but I can't sit every month waiting till midnight) So midnight the 14th, no later.
Voting is allowed the entire period,  until the end of the 27th of the month. Same thing, no votes after midnigth the 27th.
On the 28th the winners will be announced and their fractals will have a place in the Gallery of Honor.
https://fractalforums.org/index.php?action=gallery;cat=27

This is still in a trial period, so this is not final.  Improvements will follow along the way.
Feel free to share your ideas with the FF-team, on the discussion thread.  (please not here)

Above all, let's have some fun and please join the contest for "Eternal Honor and Glory " 

Linkback: https://fractalforums.org/fractal-image-of-the-month/70/-fractal-theme-iotmc-may-2020-theme-is-architecture-and-the-winners-are/3454/

Menger Fold

Rendered using Fragmentarium

Notre Dame renovations.

Made with Mandelbulb.     (Mandelbulb3Dv190)

"Connecting bridge to the floating city of quetzal"

The future

A scene from one old mandelbulber fractal, which i like very much.

Mandelbulber ... a simple Mandelbox

Parameters:
# Mandelbulber settings file
# version 2.21
# only modified parameters
[main_parameters]
ambient_occlusion_enabled true;
ambient_occlusion_mode 1;
antialiasing_size 8;
aux_light_colour_1 e000 e800 c100;
aux_light_intensity_1 4,885749382492062e-05;
aux_light_position_1 1,510443471686798 1,302715693381991 0,1604511004965876;
background_3_colors_enable false;
background_brightness 16;
background_color_1 aa00 ff00 ff00;
basic_fog_color 0c00 0c00 0c00;
basic_fog_enabled true;
basic_fog_visibility 1,685080528259277;
brightness 1,8;
camera 2,733655738035912 -5,597259645881472 2,280829350752463;
camera_distance_to_target 6,999999999999995;
camera_rotation 39,19470454238577 -43,90076853088933 119,0998590576418;
camera_top 0,890291421888757 0,2908343273876201 -0,3504234269056304;
contrast 1,4;
detail_level 0,5;
DOF_blur_opacity 1;
DOF_enabled true;
DOF_focus 0,1918366700410843;
DOF_max_noise 0,2;
DOF_MC_CA_camera_dispersion 0,25;
DOF_MC_CA_dispersion_gain 0,25;
DOF_MC_global_illumination true;
DOF_min_samples 20;
DOF_monte_carlo true;
DOF_number_of_passes 4;
DOF_radius 1,25;
DOF_samples 400;
fake_lights_color ff00 a000 5200;
fake_lights_max_iter 12;
fake_lights_min_iter 8;
file_background /home/volker/mandelbulber/textures/studio_small_02_4k_Gauss.png;
file_lightmap /home/volker/mandelbulber/textures/skylit_garage_4k.png;
flight_last_to_render 0;
fog_color_1 1600 1700 1f00;
fog_color_2 7400 6c00 6600;
fog_color_3 ff00 ff00 ff00;
formula_1 8;
formula_2 604;
formula_iterations_1 3;
formula_iterations_2 2;
fractal_enable_2 false;
glow_enabled false;
hdr true;
image_height 1080;
image_width 2560;
interior_mode true;
iteration_fog_opacity 250;
julia_c 1,507534764030359 1,382497055241261 -0,7345180279212993;
julia_mode true;
keyframe_last_to_render 0;
main_light_alpha 88,15000000000001;
main_light_beta 58,74;
main_light_intensity 0,5;
main_light_volumetric_enabled true;
main_light_volumetric_intensity 0,25;
mat1_color_texture_intensity 0,8;
mat1_coloring_speed 8;
mat1_diffuse_gradient 0 dedede 4642 333333 7704 888888;
mat1_diffuse_gradient_enable true;
mat1_displacement_texture_height 0,0005;
mat1_file_color_texture ./Substance Designer/Concrete_01/Concrete_01_basecolor.png;
mat1_file_diffusion_texture ./Substance Designer/Metal_01/Metal_01_ambientOcclusion.png;
mat1_file_displacement_texture ./Substance Designer/Concrete_01/Concrete_01_height.png;
mat1_file_normal_map_texture ./Substance Designer/Concrete_01/Concrete_01_normal.png;
mat1_file_reflectance_texture ./Substance Designer/Metal_01/Metal_01_roughness.png;
mat1_file_roughness_texture ./Substance Designer/Concrete_01/Concrete_01_roughness.png;
mat1_fractal_coloring_ic_rad_enabled_false true;
mat1_fractal_coloring_ic_rad_weight 2;
mat1_fractal_coloring_ic_xyz_enabled_false true;
mat1_fractal_coloring_init_cond_enabled_false true;
mat1_fractal_coloring_xyzC_111 2 1 1;
mat1_fresnel_reflectance true;
mat1_is_defined true;
mat1_luminosity_gradient 0 000000 4642 000000 6168 000000 7704 5b95aa 9281 000000;
mat1_normal_map_texture_height 10;
mat1_rough_surface true;
mat1_roughness_gradient 0 fdfdfd 4642 333333 7704 000000;
mat1_specular 1,26;
mat1_specular_metallic 4;
mat1_specular_metallic_roughness 0,4;
mat1_specular_metallic_width 2;
mat1_specular_width 1,6;
mat1_surface_color 8c00 8c00 8c00;
mat1_surface_color_gradient 0 fdfdfd 4642 5a5146 7704 8b9daa;
mat1_surface_roughness 0,08;
mat1_texture_mapping_type 1;
mat1_texture_scale 0,5 0,5 0,5;
mat1_use_color_texture true;
mat1_use_colors_from_palette false;
mat1_use_normal_map_texture true;
mat2_file_color_texture ./baseColor.png;
mat2_file_normal_map_texture ./normal.png;
mat2_iridescence_enabled true;
mat2_iridescence_intensity 0,1;
mat2_iridescence_subsurface_thickness 8;
mat2_is_defined true;
mat2_normal_map_texture_height 2;
mat2_reflectance 0,9;
mat2_surface_color ff00 ff00 ff00;
mat2_surface_color_gradient 0 fd6029 999 698403 1999 fff59b 2999 f5bd22 3999 0b5e87 5000 c68876 5999 a51c64 7000 3b9fee 7999 d4ffd4 9000 aba53c;
mat2_texture_mapping_type 1;
mat2_texture_scale 0,2 0,2 0,2;
mat2_transparency_interior_color 8800 8100 6500;
mat2_transparency_of_interior 0,2;
mat2_transparency_of_surface 0,8;
mat2_use_color_texture true;
mat2_use_colors_from_palette false;
mat2_use_normal_map_texture true;
MC_global_illumination_volumetric true;
MC_soft_shadows_enable true;
penetrating_lights false;
primitive_box_1_boolean_operator 0;
primitive_box_1_size 3 3 3;
primitive_plane_1_enabled true;
primitive_plane_1_material_id 2;
primitive_plane_1_position 2,512899541374439 -5,326082140276237 1,914120332414128;
primitive_plane_1_rotation 0 -90 0;
raytraced_reflections true;
saturation 1,5;
shadows_cone_angle 4;
smoothness 5;
SSAO_random_mode true;
target -0,4538077649547385 -1,688305697887889 -2,573051101995409;
textured_background true;
view_distance_max 79,09818925821689;
volumetric_fog_colour_1_distance 0,05448101059738467;
volumetric_fog_colour_2_distance 0,1089620211947693;
volumetric_fog_distance_factor 0,2179240423895386;
volumetric_fog_distance_from_surface 0,001;
volumetric_fog_enabled true;
[fractal_1]
mandelbox_scale -1,75;


Oh, well, great, thank you 

The theme for June 2020 will be "Is this Art?"
Provoke the audience

Congratulations everyone!